Why is higher ratio of calcium hydroxide is taken (with ammonium chloride) in labrotary preparation of ammonia

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Solution

According to the Stoichiometry of the reaction, 2:3 ratio of ammonium chloride to calcium hydroxide is required for the preparation of Ammonia.

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Why is the ratio of 2:3 of ammonium chloride and calcium hydroxide taken in lab preparation of ammonia gas

Q. Write the equation for:
(i) The preparation of ammonia from ammonium chloride and calcium hydroxide.
(ii) The reaction of hydrogen chloride with ammonia.

Q. In the preparation of ammonia gas from ammonium chloride and calcium hydroxide, the reactants are ground thoroughly________

(a) Write the equation for:
(i) the preparation of hydrogen chloride from sodium chloride and sulphuric acid. State whether the sulphuric acid should be concentrated or dilute.
(ii) the preparation of ammonia from ammonium chloride and calcium hydroxide.
(iii) the reaction of hydrogen chloride with ammonia.

Q. How many grams of ammonia is obtained when 32.6 g of ammonium chloride reacts with calcium hydroxide during the laboratory preparation of ammonia?

[2 N H_{4} C l + C a (O H)_{2} \to C a C l_{2} + 2 H_{2} O + 2 N H_{3}]

[N=14, H=1, O=16, S=32, Cl=35.5]

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