Question

(GUYS PLEASE HELP ME TO SOLVE THIS QUESTIONS ). 4.
(a)(i) Write the balanced chemical equation to prepare ammonia gas in the laboratory by using
an alkali.
(ii) Why is ammonia gas is not collected over water ?
(iii) Draw the flow chart for manufacturing of ammonia by Haber's process.
[4]
(b) Write the balanced chemical equations for the preparation of nitric acid by Ostwald's
process.
[3]
(c) (i) Name the acid used for the preparation of hydrogen chloride gas in the laboratory. Why
is this particular acid is preferred to other acids ?
(ii) Write the balanced chemical equation for the laboratory preparation of hydrogen chloride
[3]
gas.​

Answer 1

Explanation:

1. Ca(OH)2 + 2NH4Cl + 2NH3 + CaCl2 + 2H2O
2. Ammonia gas is lighter than air hence it is carried out by downward displacement of the air. Ammonia gas is highly soluble to water hence its not possible to carry it over water.
3. (inbox me for this one)
4. 3NO2(g)+H2O(g)→2HNO3(l)+NO(g).
5. HCl acid is used.

HCl is preferred to other acid because :-

• it has low volatility
• it has dehydrating properties

(c) ii.) H2 + Cl2 = 2HCl