Acid-Base Reactions in Chemistry

<p>Salt and Water (A)</p> Signup and view all the answers

<p>Pink (C)</p> Signup and view all the answers

<p>Calcium bicarbonate is formed, which is soluble in water (B)</p> Signup and view all the answers

<p>Base. (D)</p> Signup and view all the answers

<p>Blue-green (A)</p> Signup and view all the answers

<p>Salt and Water (B)</p> Signup and view all the answers

<p>Hydrochloric acid. (D)</p> Signup and view all the answers

<p>It forms calcium bicarbonate, which is soluble in water. (C)</p> Signup and view all the answers

<p>It produces salt, carbon dioxide, and water. (C)</p> Signup and view all the answers

<p>The pink colour disappears. (B)</p> Signup and view all the answers

<p>Salt and water (A)</p> Signup and view all the answers

<p>A blue-green solution with the copper oxide dissolving. (B)</p> Signup and view all the answers

<p>Acid + Base → Salt + Water (C)</p> Signup and view all the answers

<p>The pink colour will disappear. (C)</p> Signup and view all the answers

<p>The solution becomes basic. (B)</p> Signup and view all the answers

<p>Formation of copper(II) chloride (B)</p> Signup and view all the answers

<p>It nullifies the effects of an acid by a base and vice versa. (D)</p> Signup and view all the answers

<p>Calcium carbonate, carbon dioxide, and water (B)</p> Signup and view all the answers

<p>Carbon dioxide, by turning limewater milky (D)</p> Signup and view all the answers

<p>The solution turns colorless because the acid neutralizes the base, causing the phenolphthalein to become colorless (C)</p> Signup and view all the answers

<p>Zinc sulfate (aqueous) and water (liquid) (A)</p> Signup and view all the answers

<p>Adding a base (D)</p> Signup and view all the answers

<p>$MgO(s) + 2HCl(aq) \rightarrow MgCl_2(aq) + H_2O(l)$ (B)</p> Signup and view all the answers

<p>Water serves as a solvent, allowing the ions to move freely and react more effectively. (D)</p> Signup and view all the answers

<p>The formation of copper(II) chloride, which is soluble and imparts a blue-green color to the solution. (B)</p> Signup and view all the answers

<p>It is an exothermic reaction where energy is released, leading to an increase in temperature. (A)</p> Signup and view all the answers

<p>Ensure that the same volume of hydrochloric acid at different concentrations is used, and the reactions are performed under identical conditions. (C)</p> Signup and view all the answers

<p>The concentration of $Ca^{2+}$ ions would increase until the solution is saturated with $Ca(HCO_3)_2$, then remain constant. (A)</p> Signup and view all the answers

<p>$MgCO_3 \cdot xSiO_2 \cdot yH_2O$ (D)</p> Signup and view all the answers

<p>The color change may be premature due to the reaction of $Ba(OH)_2$ with atmospheric $CO_2$ forming $BaCO_3$, which reduces the effective concentration of $OH^-$ ions. (D)</p> Signup and view all the answers

<p>The primary hazard is a rapid exothermic reaction leading to a potential boil-over and release of corrosive fumes; neutralize gradually with a weak acid like acetic acid and ensure adequate ventilation. (C)</p> Signup and view all the answers

<p>The reaction involves the formation of multiple copper-chloride complexes ($CuCl_x^{2-x}$), where the higher-order complexes react more readily with $CuO$, leading to a non-linear rate dependence. (D)</p> Signup and view all the answers

<p>$Al_2O_3 &lt; MgO &lt; Na_2O$ (B)</p> Signup and view all the answers

<p>Precipitate: $CaCO_3$; Gas: $CO_2$; Heating reverses the initial reaction, converting calcium hydrogencarbonate back to calcium carbonate and carbon dioxide. (A)</p> Signup and view all the answers

<p>The indicator's $pK_a$ should be as close as possible to the pH at the equivalence point to ensure a sharp color change. (B)</p> Signup and view all the answers

<p>Employing a chelating agent that selectively binds with the $M^{2+}$ ions, thereby shifting the dissolution equilibrium. (C)</p> Signup and view all the answers

<p>Using a calorimeter with poor insulation, leading to heat loss to the surroundings. (B)</p> Signup and view all the answers

<p>Calcium hydrogencarbonate is formed, making the solution soluble. (A)</p> Signup and view all the answers

<p>Chalk, marble, and limestone (D)</p> Signup and view all the answers

<p>A blue-green solution forms and the copper oxide dissolves. (C)</p> Signup and view all the answers

<p>It is a metal carbonate or hydrogencarbonate. (C)</p> Signup and view all the answers

<p>$M_xO_y + 2yHA \rightarrow xM(A_2)_y + yH_2O$ (D)</p> Signup and view all the answers

<p>To act as an indicator to show when the solution has been neutralised. (B)</p> Signup and view all the answers

<p>$H_2O(l)$ (A)</p> Signup and view all the answers

<p>The formation of carbonic acid as an unstable intermediate, which decomposes into $CO_2$ and $H_2O$. (D)</p> Signup and view all the answers

<p>$HA$ is a strong acid that completely neutralized the excess $NaOH$. (A)</p> Signup and view all the answers

<p>$[M(H_2O)_6]X_3$ (D)</p> Signup and view all the answers

<p>Calcium hydrogencarbonate is formed, which is soluble in water. (C)</p> Signup and view all the answers

<p>It produces a salt, carbon dioxide, and water. (C)</p> Signup and view all the answers

<p>Sodium chloride and water (B)</p> Signup and view all the answers

<p>The solution turns blue-green and the copper oxide dissolves. (C)</p> Signup and view all the answers

<p>$Acid + Base \rightarrow Salt + Water$ (B)</p> Signup and view all the answers

<p>The pink color will disappear. (C)</p> Signup and view all the answers

<p>The NaOH increases the hydroxide ion concentration, making the solution basic again. (D)</p> Signup and view all the answers

<p>$X_2(SO_4)_3 \cdot 12H_2O$ (A)</p> Signup and view all the answers

<p>$MCl_2$ (C)</p> Signup and view all the answers

The reaction of calcium carbonate with water and carbon dioxide forms calcium bicarbonate, which is soluble in water.

Metal carbonates and hydrogencarbonates react with acids to produce a salt, carbon dioxide, and water.

A reaction between an acid and a base producing a salt and water.

A chemical indicator that turns pink in basic solutions and colorless in acidic solutions.

In a neutralization reaction, the products formed are a salt and water.

Copper oxide reacts with hydrochloric acid to form copper(II) chloride and water.

The general equation for an acid-base reaction is Base + Acid → Salt + Water.

The color change in phenolphthalein indicates the reaction of acid and base.

The reaction can be expressed as CuO + 2HCl → CuCl2 + H2O.

Calcium bicarbonate formed from the reaction is soluble in water.

Limestone, chalk, and marble are forms of calcium carbonate.

Acids react with carbonates to produce salts, carbon dioxide, and water.

The products of an acid and base reaction include salt and water.

Phenolphthalein indicates pH changes, turning pink in basic solutions and colorless in acidic solutions.

Adding acid to a basic solution changes phenolphthalein from pink to colorless.

The neutralization reaction follows the formula: Base + Acid → Salt + Water.

Metal oxides react with acids to form salts and water and can change color during this process.

Copper oxide dissolves in acid to form blue-green copper(II) chloride solution.

The general reaction is: Metal oxide + Acid → Salt + Water.

Acid-base reactions consistently produce a salt as a product.

Calcium carbonate, water, and carbon dioxide produce soluble calcium bicarbonate.

A metal carbonate reacts with acid to produce a salt, carbon dioxide, and water.

In a neutralization, acid and base produce salt and water without changing the temperature significantly.

Phenolphthalein turns from pink in basic solutions to colorless in acidic solutions during a reaction.

Acid and base reactions yield products of salt and water, following a general equation.

Adding acid to a base results in a color shift in phenolphthalein, demonstrating pH change.

Copper oxide reacts with hydrochloric acid to form copper(II) chloride and water, turning the solution blue-green.

The general equation is: Base + Acid → Salt + Water, showing consistent outcomes.

Different forms of calcium carbonate, each contributing to chemical reactions with acids.

Metal oxides react with acids to produce salts and water.

Copper oxide dissolves in hydrochloric acid to form copper(II) chloride with a blue-green color.

The color of the solution changes to blue-green when copper oxide reacts with acid.

Phenolphthalein changes color from pink to colorless in acid, indicating pH change.

An acid neutralizes a base, producing salt and water in the process.

The general equation for acid-base reactions is Base + Acid → Salt + Water.

Limestone, chalk, and marble are forms of calcium carbonate used in reactions.

Acids react with metal carbonates to produce salt, carbon dioxide, and water.

Neutralization reactions typically don't change temperature significantly while producing salt and water.

When a metal oxide reacts with acid, a salt and water are formed.

The reaction of copper oxide with hydrochloric acid creates a blue-green solution due to copper(II) chloride.

Adding acid to a base changes the color of phenolphthalein from pink to colorless, indicating neutralization.

A base like NaOH can neutralize an acid, leading to the formation of a salt and water without temperature change.

The reaction of any metal oxide with acid always yields salt and water as products.

Metal carbonates react with acids to create a salt, carbon dioxide, and water as byproducts.

The general formula for an acid-base reaction is: Acid + Base → Salt + Water.

Phenolphthalein serves as an indicator to show pH changes in acid-base reactions by changing color.

Copper oxide dissolves in hydrochloric acid to form a blue-green copper(II) chloride solution and water.

Excess carbon dioxide reacts with calcium carbonate to form calcium bicarbonate, which is soluble in water.

Acids react with metal carbonates and hydrogencarbonates to produce a salt, carbon dioxide, and water.

A reaction between an acid and a base that produces a salt and water without temperature change.

Phenolphthalein turns colorless in acidic conditions and pink in basic conditions.

When sodium hydroxide reacts with hydrochloric acid, it produces sodium chloride and water.

The blue-green color in the solution indicates the formation of copper(II) chloride during the reaction with copper oxide.

When a base is added to an acidic solution containing phenolphthalein, it turns pink indicating a shift to basic conditions.

Metal oxides react with acids to produce a salt and water in a predictable manner.

Adding an acid to a base neutralizes it, resulting in the formation of salt and water without a significant temperature change.