Ammonia Preparation and Reactions Quiz

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What is formed when ammonium chloride is reacted with sodium hydroxide?

Calcium chloride

Water vapor

Hydrochloric acid

Ammonia gas (correct)

Which chemical equation correctly represents the reaction between ammonium chloride and calcium oxide to produce ammonia?

2NH₄Cl + Ca(OH)₂ → CaCl₂ + 2NH₃ + H₂O

NH₄Cl + CaO → CaCl₂ + H₂O + NH₃

2NH₄Cl + CaO → Ca(OH)₂ + 2NH₃

2NH₄Cl + CaO → CaCl₂ + 2H₂O + 2NH₃ (correct)

What ratio of ammonium chloride to calcium oxide is used in the laboratory preparation of ammonia?

1:1

1:2

2:1 (correct)

3:1

Why is ammonia gas not collected by downward displacement of water?

It is soluble in water. Signup and view all the answers

Which substance is used to dry the ammonia gas produced in the laboratory preparation?

Calcium oxide Signup and view all the answers

What happens to the calcium oxide during the reaction with ammonia?

It forms calcium hydroxide. Signup and view all the answers

What is the primary purpose of heating the mixture of ammonium chloride and calcium oxide?

To produce ammonia gas. Signup and view all the answers

What is one precaution recommended when preparing ammonia in the laboratory?

Powder the solid reagents. Signup and view all the answers

What color of precipitate is formed when iron(III) chloride reacts with ammonium hydroxide?

Reddish brown Signup and view all the answers

Which of the following statements about the reaction between ammonium hydroxide and copper sulfate is true?

It results in a deep blue solution after adding excess ammonia. Signup and view all the answers

What is the resulting product when dry ammonia gas is reacted with hot sodium?

Sodamide Signup and view all the answers

What is formed when Nessler's reagent reacts with ammonium hydroxide?

A brown precipitate Signup and view all the answers

What happens to phenolphthalein in an aqueous ammonia solution?

A pink color is produced. Signup and view all the answers

Which metal salt produces a dirty green precipitate when reacting with ammonium hydroxide?

Iron(II) sulfate Signup and view all the answers

What phenomenon is demonstrated in the fountain experiment with ammonia?

The high solubility of ammonia in water Signup and view all the answers

Which of the following metal hydroxides is soluble in excess ammonia?

Copper hydroxide Signup and view all the answers

What state is ammonia typically found in at room temperature?

Gaseous Signup and view all the answers

At what temperature does ammonia liquefy at normal atmospheric pressure?

-33.41°C Signup and view all the answers

What happens to litmus paper when ammonia is dissolved in water?

It turns blue Signup and view all the answers

Which compound is formed when ammonia reacts with hydrochloric acid?

Ammonium chloride Signup and view all the answers

What is one of the properties of ammonia when passed over metal oxides at high temperatures?

It produces pure metals and nitrogen gas Signup and view all the answers

What is the approximate vapor density of ammonia?

8.5 Signup and view all the answers

What is the main component of liquor ammonia?

30% Ammonia Signup and view all the answers

What does ammonia produce when reacted with oxygen in the presence of a catalyst?

Nitrogen compounds Signup and view all the answers

Which method is used for collecting hydrogen sulfide gas during its laboratory preparation?

Upward displacement in a gas jar Signup and view all the answers

What is the role of phosphorus pentoxide in the purification of hydrogen sulfide gas?

To eliminate water vapor Signup and view all the answers

Why is concentrated sulfuric acid not suitable for producing hydrogen sulfide?

It is an oxidizing agent that converts H₂S into sulfur dioxide Signup and view all the answers

In the Kipp's apparatus, what happens when the stopper is opened?

Excess hydrogen sulfide gas escapes and pressure drops Signup and view all the answers

What is the purpose of passing H₂S gas through a sodium hydrogen sulfide solution?

To remove acid vapor impurities Signup and view all the answers

What are the main uses of ammonia in industrial applications?

Manufacturing inorganic fertilizers Signup and view all the answers

Which process is employed for the industrial manufacture of ammonia?

Haber's process Signup and view all the answers

What is the temperature range required for the production of urea?

150°C - 210°C Signup and view all the answers

What is a major nitrogenous fertilizer produced from ammonia?

Ammonium phosphate Signup and view all the answers

Which of the following chemical reactions is involved in the laboratory preparation of hydrogen sulfide?

FeS + dil. H₂SO₄ → FeSO₄ + H₂S Signup and view all the answers

How many volumes of ammonia are used in the production of urea?

Two volumes Signup and view all the answers

What is the primary role of the catalyst in the industrial manufacture of ammonia?

To accelerate the reaction rate Signup and view all the answers

What is the molecular mass of hydrogen sulfide (H₂S)?

34 g/mol Signup and view all the answers

What color complex is formed when H₂S gas is passed through freshly prepared sodium nitroprusside solution?

Violet Signup and view all the answers

Which substance is produced alongside nitrogen during the decomposition of ammonium nitrite?

Water Signup and view all the answers

What chemical reaction occurs when H₂S reacts with silver?

2Ag + H₂S → Ag₂S + H₂ Signup and view all the answers

Which of the following uses of nitrogen is NOT correct?

As a reactive gas in chemical reactions Signup and view all the answers

What color change occurs in oil paintings containing lead when exposed to H₂S?

Turns black Signup and view all the answers

What happens to blue litmus paper when it is inserted into an aqueous solution of H₂S?

It turns red. Signup and view all the answers

What is the main product when H₂S burns in excess oxygen?

Sulfur dioxide and steam Signup and view all the answers

Which of the following statements is true about the density of H₂S?

It has a vapor density of 17.6. Signup and view all the answers

What occurs when H₂S reacts with copper sulfate in aqueous solution?

It creates a black precipitate of copper sulfide. Signup and view all the answers

What kind of acid is an aqueous solution of H₂S considered to be?

Weak acid Signup and view all the answers

In what state is hydrogen sulfide (H₂S) typically found at room temperature?

Poisonous gas Signup and view all the answers

What is one of the key properties of H₂S when exposed to high pressure?

It liquefies and forms a colorless liquid. Signup and view all the answers

Which of the following describes H₂S's role as a reducing agent?

It reduces potassium dichromate to chromic sulfate. Signup and view all the answers

What is the state of nitrogen at normal temperature and pressure (NTP)?

Gas Signup and view all the answers

Which of the following statements about nitrogen's color is correct?

Nitrogen is colorless. Signup and view all the answers

At what temperature does nitrogen freeze?

-209.8°C Signup and view all the answers

What condition is necessary for nitrogen to react with hydrogen to form ammonia?

200 atm and 550°C Signup and view all the answers

What is formed when nitrogen reacts with magnesium?

Magnesium nitride Signup and view all the answers

Which product is formed when calcium carbide reacts with nitrogen?

Calcium cyanamide Signup and view all the answers

How does natural nitrogen fixation occur?

By lightning strikes Signup and view all the answers

What role does electrical spark play in the reaction of nitrogen with oxygen?

Provides the activation energy Signup and view all the answers

What is produced when chlorine gas reacts with hydrogen gas?

Hydrochloric acid Signup and view all the answers

Which substance is formed through the Le Blanc process alongside hydrochloric acid?

Sodium hydrogen sulfate Signup and view all the answers

In the Ostwald process, what is the second step after producing nitric oxide?

Oxidizing nitric oxide to nitrogen dioxide Signup and view all the answers

What is the role of vanadium pentoxide in the contact process for producing sulfuric acid?

A catalyst for oxidation Signup and view all the answers

What happens to sulfur trioxide after its production in the contact process?

It is converted to oleum Signup and view all the answers

At what temperature is ammonia and air passed over the catalyst in the Ostwald process?

700-800°C Signup and view all the answers

In which reaction does sodium chloride react with sulfuric acid?

To produce hydrochloric acid and sodium hydrogen sulfate Signup and view all the answers

What is the final product after distilling the dilute nitric acid produced in the Ostwald process?

Concentrated nitric acid (98%) Signup and view all the answers

What is the role of the oxidation chamber in the Contact Process?

To catalyze the oxidation of $SO_2$ to $SO_3$ Signup and view all the answers

Which catalyst is preferred in the Contact Process for its resistance to deactivation?

$V_2O_5$ Signup and view all the answers

What is the intermediate product formed during the absorption of $SO_3$ in concentrated sulfuric acid?

Oleum ($H_2S_2O_7$) Signup and view all the answers

What happens to the sulfuric acid during the exothermic reaction when $SO_3$ is absorbed?

It is transformed into oleum Signup and view all the answers

What is a significant challenge during the Contact Process?

Loss of catalyst integrity due to impurities Signup and view all the answers

Which of the following reactions takes place in the oxidation chamber?

$SO_2$ + $O_2$ → $SO_3$ Signup and view all the answers

What is the final step in producing concentrated sulfuric acid after forming oleum?

Adding water to oleum Signup and view all the answers

What is an example of a solid impurity that could affect the Contact Process?

Dust Signup and view all the answers