Equation - 2

Question 1

Laboratory Preparation of HCl Gas

Answer 1

NaCl + H2SO4 (conc.) (<200°C) → NaHSO4 + HCl

Question 2

Purification of HCl Gas

Answer 2

Pass the gas through conc. sulphuric acid.

Question 3

Collection of HCl Gas

Answer 3

By upward displacement of air (gas is heavier than air and highly soluble in water).

Question 4

Identification of HCl Gas

Answer 4

Glass rod dipped in ammonia solution forms thick white fumes.

Question 5

Preparation of Hydrochloric Acid

Answer 5

HCl gas dissolved in water using a funnel arrangement.

Question 7

Reaction of HCl with Active Metal

Answer 7

Zn + 2HCl → ZnCl2 + H2

Question 8

Reaction of ZnO with HCl

Answer 8

ZnO + 2HCl → ZnCl2 + H2O

Question 9

Reaction of HCl with a Base

Answer 9

Ca(OH)2 + 2HCl → CaCl2 + 2H2O

Question 10

Reaction of HCl with a Carbonate

Answer 10

NH4OH + HCl → NH4Cl + H2O

Question 11

Reaction of HCl with Sodium Carbonate

Answer 11

Na2CO3 + HCl → 2NaCl + CO2

Question 12

Reaction of HCl with Sodium Bicarbonate

Answer 12

NaHCO3 + HCl → NaCl + H2O + CO2

Question 13

Reaction of HCl with Magnesium Sulphite

Answer 13

MgSO3 + HCl → MgCl2 + H2O + SO2

Question 14

Reaction of HCl with Sodium Bisulphite

Answer 14

NaHSO3 + HCl → NaCl + H2O + SO2

Question 15

Reaction of HCl with Silver Nitrate

Answer 15

AgNO3 + HCl → AgCl + HNO3

Question 16

Reaction of HCl with Lead Nitrate

Answer 16

Pb(NO3)2 + 2HCl → PbCl2 + 2HNO3

Question 17

Preparation of Aqua Regia

Answer 17

HCl + HNO3 (conc.) → NOCl + 2H2O + 2[Cl]

Question 19

Laboratory Preparation of Ammonia

Answer 19

2NH4Cl + Ca(OH)2 → CaCl2 + 2H2O + 2NH3

Question 20

Drying Agent for Ammonia

Answer 20

Quicklime (CaO)

Question 21

Collection of Ammonia Gas

Answer 21

By downward displacement of air (lighter than air and highly soluble in water).

Question 22

Preparation of Ammonia from NH4Cl

Answer 22

NH4Cl + NaOH → NaCl + H2O + NH3

Question 23

Preparation of Ammonia from Ammonium Sulphate

Answer 23

(NH4)2SO4 + Ca(OH)2 → CaSO4 + 2H2O + 2NH3

Question 24

Preparation of Ammonia from Metal Nitrides

Answer 24

Mg3N2 + 6H2O → 3Mg(OH)2 + 2NH3

Question 25

Preparation of Ammonia from Calcium Nitride

Answer 25

Ca3N2 + 6H2O → 3Ca(OH)2 + 2NH3

Question 26

Preparation of Ammonia from Aluminium Nitride

Answer 26

AlN + 3H2O → Al(OH)3 + NH3

Question 28

Haber Process for Ammonia Manufacture

Answer 28

N2 + 3H2 → 2NH3 + Δ (450-500°C, Fe catalyst, Mo promoter)

Question 29

Source of Nitrogen for Haber Process

Answer 29

Fractional distillation of liquid air.

Question 30

Source of Hydrogen for Haber Process

Answer 30

Water gas (Bosch process).

Question 31

Reactants in Haber Process

Answer 31

Nitrogen and hydrogen in 1:3 ratio.

Question 32

Catalyst in Haber Process

Answer 32

Finely divided iron.

Question 33

Promoter in Haber Process

Answer 33

Molybdenum.