Chemistry: Reactions of Metals and Carbonates
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Questions and Answers

When a metal reacts with an acid, it forms a salt and ______ gas.

hydrogen

The reaction between sodium hydroxide and zinc produces sodium ______ and hydrogen gas.

zincate

Not all metals are able to react with sodium ______ to produce hydrogen gas.

hydroxide

Sodium carbonate has the chemical formula ______.

<p>Na2CO3</p> Signup and view all the answers

Sodium hydrogencarbonate has the chemical formula ______.

<p>NaHCO3</p> Signup and view all the answers

When sodium carbonate reacts with dilute hydrochloric acid, a ______ is produced.

<p>gas</p> Signup and view all the answers

The gas produced from the reaction of carbonates with acids is passed through ______ water to test for its presence.

<p>lime</p> Signup and view all the answers

Lime water is also known as calcium ______ solution.

<p>hydroxide</p> Signup and view all the answers

When metal reacts with acid it produces salt and ______ gas.

<p>hydrogen</p> Signup and view all the answers

The reaction of sodium hydroxide with zinc produces hydrogen and sodium ______.

<p>zincate</p> Signup and view all the answers

When a metal reacts with an acid, it displaces ______ atoms from the acid as hydrogen gas.

<p>hydrogen</p> Signup and view all the answers

The general equation for the reaction of a metal with an acid can be summarized as Acid + Metal → Salt + ______ gas.

<p>hydrogen</p> Signup and view all the answers

When granulated zinc metal reacts with sodium hydroxide, ______ gas is formed.

<p>hydrogen</p> Signup and view all the answers

The reaction between sodium hydroxide and zinc metal produces sodium zincate and ______.

<p>hydrogen</p> Signup and view all the answers

The chemical formula for sodium zincate, which is produced when zinc reacts with sodium hydroxide, is ______.

<p>Na2ZnO2</p> Signup and view all the answers

Sodium hydrogencarbonate is also commonly known as baking soda, and its chemical formula is ______.

<p>NaHCO3</p> Signup and view all the answers

When sodium carbonate or sodium hydrogencarbonate reacts with dilute hydrochloric acid, the gas produced is ______ dioxide.

<p>carbon</p> Signup and view all the answers

The chemical formula for lime water, which is used to test for carbon dioxide, is ______.

<p>Ca(OH)2</p> Signup and view all the answers

When carbon dioxide gas is passed through lime water, a milky substance, ______ carbonate, is formed.

<p>calcium</p> Signup and view all the answers

In the reaction of a metal with an acid, the metal displaces ______ atoms from the acids.

<p>hydrogen</p> Signup and view all the answers

The general equation for the reaction of a metal with an acid produces a ______ and hydrogen gas.

<p>salt</p> Signup and view all the answers

The reaction of zinc metal with sodium hydroxide produces hydrogen gas and sodium ______.

<p>zincate</p> Signup and view all the answers

The equation 2NaOH(aq) + Zn(s) → Na2ZnO2(s) + H2(g) illustrates the formation of ______ gas when sodium hydroxide reacts with granulated zinc metal.

<p>hydrogen</p> Signup and view all the answers

Not all metals are capable of reacting with ______ to produce hydrogen gas; reactivity varies based on the metal's electrochemical properties.

<p>acids</p> Signup and view all the answers

When metal carbonates or metal hydrogencarbonates react with acids, the gas produced is ______ dioxide, which can be identified by passing it through lime water.

<p>carbon</p> Signup and view all the answers

To identify the gas produced in the reaction between metal carbonates and acids, it can be passed through ______ water to observe if it turns milky, indicating the presence of carbon dioxide.

<p>lime</p> Signup and view all the answers

The reaction between sodium carbonate ($Na_2CO_3$) and dilute HCl results in the production of carbon dioxide, water, and sodium ______.

<p>chloride</p> Signup and view all the answers

The reaction between sodium ______ ($NaHCO_3$) and dilute HCl also produces carbon dioxide, water, and sodium chloride, similar to the reaction with sodium carbonate.

<p>hydrogencarbonate</p> Signup and view all the answers

In the reaction between an acid and a metal carbonate/hydrogencarbonate, the formation of carbon dioxide can be confirmed when it turns lime water milky due to the formation of calcium ______.

<p>carbonate</p> Signup and view all the answers

In the reaction between a metal and an acid, the metal ______ hydrogen atoms from the acid, resulting in the formation of hydrogen gas and a salt.

<p>displaces</p> Signup and view all the answers

The general reaction between an acid and a metal can be represented as: Acid + Metal ______ + Hydrogen gas

<p>Salt</p> Signup and view all the answers

The reaction between granulated zinc metal and sodium hydroxide solution results in the formation of sodium zincate, represented by the chemical formula ______.

<p>Na2ZnO2</p> Signup and view all the answers

The reaction (2NaOH(aq) + Zn(s) Na2ZnO2(s) + H2(g)) is not universally applicable to all metals, indicating a variance in ______ activities.

<p>electrochemical</p> Signup and view all the answers

When metal carbonates or metal hydrogencarbonates react with acids, the gas produced is passed through ______ to test for its presence.

<p>lime water</p> Signup and view all the answers

In the reaction of sodium carbonate ((Na_2CO_3)) with dilute hydrochloric acid (HCl), the products include sodium chloride (NaCl), water ((H_2O)), and ______ gas.

<p>carbon dioxide</p> Signup and view all the answers

The confirmatory test for carbon dioxide gas involves bubbling the gas through lime water, resulting in the formation of a white precipitate of ______.

<p>calcium carbonate</p> Signup and view all the answers

The reaction between a metal and an acid is a ______ reaction resulting in the formation of a salt and hydrogen gas.

<p>single displacement</p> Signup and view all the answers

Sodium zincate, (Na_2ZnO_2), is a complex oxide where zinc exists in the ______ oxidation state when formed during the reaction between zinc and sodium hydroxide.

<p>+2</p> Signup and view all the answers

Reactions between metals and acids proceed via a redox mechanism, where the metal undergoes ______ and the hydrogen ions from the acid undergo reduction to form hydrogen gas.

<p>oxidation</p> Signup and view all the answers

In reactions between metals and acids, the metal displaces ______ atoms from the acid.

<p>hydrogen</p> Signup and view all the answers

The reaction of a metal with an acid produces hydrogen gas and a compound called a ______.

<p>salt</p> Signup and view all the answers

The chemical formula for sodium zincate, which is produced in the reaction between sodium hydroxide and zinc, is ______.

<p>Na2ZnO2</p> Signup and view all the answers

The reaction between sodium hydroxide and zinc also produces ______ gas.

<p>hydrogen</p> Signup and view all the answers

Not all metals are capable of reacting with sodium hydroxide to produce hydrogen gas; the ______ of the metal plays a crucial role.

<p>reactivity</p> Signup and view all the answers

In Activity 2.5, test tubes A and B respectively contain sodium carbonate (Na2CO3) and sodium ______ (NaHCO3).

<p>hydrogencarbonate</p> Signup and view all the answers

In Activity 2.5, dilute ______ is added to both test tubes containing sodium carbonate and sodium hydrogencarbonate.

<p>HCl</p> Signup and view all the answers

The gas produced from the reaction of metal carbonates and hydrogencarbonates with acids is passed through ______ water to test for its presence.

<p>lime</p> Signup and view all the answers

The reaction between metal carbonates/hydrogencarbonates and acids releases a colorless, odorless gas that, when bubbled through limewater, forms a milky precipitate of calcium ______.

<p>carbonate</p> Signup and view all the answers

While both sodium carbonate ($Na_2CO_3$) and sodium hydrogencarbonate ($NaHCO_3$) react with acids to produce $CO_2$, the latter's reaction often proceeds more vigorously due to its inherent ______ character.

<p>amphoteric</p> Signup and view all the answers

Flashcards

Reaction of metal with acid

A chemical reaction that produces a salt and hydrogen gas when a metal reacts with an acid.

General equation of acid-metal reaction

The formula: Acid + Metal → Salt + Hydrogen gas indicates how metals react with acids.

Sodium Zincate formation

Sodium zincate is formed when zinc reacts with sodium hydroxide.

Formation of hydrogen gas

Hydrogen gas is produced in metal reactions with acids and alkalies.

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Sodium carbonate with hydrochloric acid

Sodium carbonate reacts with dilute hydrochloric acid to produce carbon dioxide gas.

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Sodium hydrogencarbonate with acid

Sodium hydrogencarbonate reacts with acid to release carbon dioxide gas as well.

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Lime water test for carbon dioxide

Passing carbon dioxide through lime water turns it milky, confirming CO2 presence.

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Metal carbonate reaction with acid

Metal carbonates react with acids to form salt, carbon dioxide, and water.

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Granulated zinc in reaction

Zinc, as a solid, participates actively in chemical reactions with acids and alkalies.

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Distinction between carbonates and bicarbonates

Metal carbonates and metal hydrogencarbonates react differently with acids; bicarbonates produce CO2 more readily.

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Salt formation in reactions

Reactions between metals and acids produce salts as products.

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Metal displacement

In acid reactions, metals displace hydrogen to form hydrogen gas.

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Reaction of sodium carbonate

Sodium carbonate reacts with hydrochloric acid to release CO2 gas.

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Reaction of sodium hydrogencarbonate

Sodium hydrogencarbonate reacts with acid to release carbon dioxide gas.

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Observing gas in reactions

Gas produced in acid reactions can be tested with lime water.

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Sodium zincate equation

The reaction of zinc with sodium hydroxide forms sodium zincate.

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Test tube observations

Calculate and record the outcomes of acid reactions in test tubes.

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Hydrogen gas production

Hydrogen gas is a common product in metal-acid reactions.

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Distinction in carbonate types

Metal carbonates and hydrogencarbonates react differently with acids, releasing CO2.

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Chemical equation for metal reaction

The general reaction is Acid + Metal → Salt + Hydrogen gas.

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Zinc reaction with NaOH

The reaction of zinc with sodium hydroxide produces sodium zincate and hydrogen gas.

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Activity with metals

An activity observing the reaction of metals with acids and bases, focusing on hydrogen gas production.

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Sodium carbonate reaction

Sodium carbonate reacts with dilute hydrochloric acid to produce salt, water, and carbon dioxide.

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Sodium hydrogencarbonate reaction

Sodium hydrogencarbonate reacts with acid to produce carbon dioxide, salt, and water.

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Calcium hydroxide test

Lime water turns milky when carbon dioxide passes through it, confirming its presence.

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Reactants in carbonate test

Sodium carbonate and sodium hydrogencarbonate are tested with hydrochloric acid in separate test tubes.

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Balance of reactions

Chemical equations for reactions should be balanced, showing all reactants and products accurately.

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Observing gas production

Gas produced in carbonate and bicarbonate reactions can be observed and analyzed, especially with lime water.

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General product of metal reactions

When metals react with acids, they typically produce a salt and hydrogen gas.

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Hydrogen gas in reactions

Hydrogen gas is a common result of metal reactions, particularly with acids and bases.

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Metal displacement reaction

A reaction where a metal displaces hydrogen from an acid, producing salt and hydrogen gas.

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Sodium carbonate reaction with HCl

When sodium carbonate reacts with hydrochloric acid, it produces carbon dioxide, salt, and water.

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Formation of sodium zincate

Sodium zincate is formed when zinc reacts with sodium hydroxide and releases hydrogen gas.

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Passing gas through lime water

Passing carbon dioxide through lime water turns it milky, confirming the presence of CO2.

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Chemical equation for sodium carbonate

The reaction of sodium carbonate with HCl can be written as Na2CO3 + 2HCl → 2NaCl + H2O + CO2.

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Chemical equation for sodium hydrogencarbonate

The reaction of sodium hydrogencarbonate with HCl is NaHCO3 + HCl → NaCl + H2O + CO2.

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Observations of gas production

Gas produced in reactions can be observed and tested, particularly using lime water to confirm CO2.

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Test tube experiment setup

In experiments, different chemicals are placed in labeled test tubes to observe reactions and record findings.

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Hydrogen gas generation

Hydrogen gas is commonly produced in reactions between acids and metals or alkalis.

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Sodium Hydroxide Reaction

Zinc reacts with sodium hydroxide to produce sodium zincate and hydrogen gas.

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Gas Formation in Metal Oxides

The production of hydrogen gas occurs in reactions between metals and acids or bases.

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Carbon Dioxide Test

Passing carbon dioxide through lime water confirms its presence by turning it milky.

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Metal Carbonates with Acids

Metal carbonates react with acids to form salt, carbon dioxide, and water.

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Balanced Equations

Chemical equations must be balanced to accurately represent all reactants and products.

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Granulated Zinc Experiment

Involves reacting granulated zinc with sodium hydroxide to observe hydrogen gas production.

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Study Notes

Metal Reactions with Acids

  • Metal + Acid → Salt + Hydrogen gas
  • Zinc reacts with sodium hydroxide solution when heated to produce hydrogen gas.
  • 2NaOH(aq) + Zn(s) → Na₂ZnO₂(s) + H₂(g) (Sodium zincate)

Metal Carbonates and Hydrogencarbonates Reactions with Acids

  • Sodium carbonate reacts with dilute hydrochloric acid to produce sodium chloride, water, and carbon dioxide gas. Na₂CO₃(s) + 2HCl(aq) → 2NaCl(aq) + H₂O(l) + CO₂(g)
  • Sodium hydrogencarbonate reacts with dilute hydrochloric acid to produce sodium chloride, water, and carbon dioxide gas. NaHCO₃(s) + HCl(aq) → NaCl(aq) + H₂O(l) + CO₂(g)
  • Passing the carbon dioxide gas through limewater forms a white precipitate (calcium carbonate). Ca(OH)₂ (aq) + CO₂(g) → CaCO₃(s) + H₂O(l) (White precipitate)
  • To observe these reactions, 0.5g of sodium carbonate (Na₂CO₃) or 0.5g of sodium hydrogencarbonate (NaHCO₃) are placed in separate test tubes.
  • Dilute hydrochloric acid (HCl) is added to each test tube.
  • The gas produced is passed through limewater (calcium hydroxide solution).
  • Observations should be recorded.
  • The steps are repeated as per Activity 2.3.
  • Place a few pieces of granulated zinc in a test tube.
  • Add 2 mL of sodium hydroxide solution and warm the contents of the test tube.
  • Repeat the procedure and record observations.

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Description

Explore the fascinating reactions of metals and carbonates with acids in this quiz. Understand the processes that lead to the formation of salts and gases, as well as the unique reactions that occur with different chemical compounds. Test your knowledge on these fundamental topics in chemistry.

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