(a) Give one use each of four different compounds of ammonia.
(b) Describe two tests to identify ammonia and ammonium ions in an aqueous solution.

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Solution

Uses of ammonia compounds:

Ammonium chloride is used in Leclance cells.

Ammonium sulphate is used as a fertiliser.

Ammonium nitrate is used as an explosive.

Ammonium carbonate is used a lab reagent.

Test to identify ammonia and ammonium ions in an aqueous solution:

Addition of zinc chloride to the solution leads to the formation of white gelatinous zinc hydroxide precipitate.

Addition of lead nitrate solution to the solution containing ammonium ions leads to the formation of a white insoluble precipitate of lead hydroxide.

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Similar questions

(a) Which feature of ammonia molecule leads to the formation of the ammonium ion when ammonia dissolves in water ?

(b) Name the other ion formed when ammonia dissolves in water.

Give reasons for the following :

(a) Liquid ammonia is used as a refrigerant in ice plants.

(b) Aqueous solution of ammonia is used for removing grease stains from woollen clothes.

(d) Aqueous solution of ammonia conducts electricity.

Q. A solution of compound

Z

gives a light blue precipitate with aqueous ammonia. The precipitate
dissolves in an excess of ammonia.
A flame test is done on compound

Z

.
What is the colour of the flame?

Q. Give the balanced equation for the following conversions:
(i) Ammonia to nitrogen using an acidic gas.
(ii) Ammonia to nitrogen using copper oxide.
(iii) Ammonia to nitrogen using oxygen.
(iv) Ammonia to nitrogen trichloride.
(v) Ammonia to ammonium sulphate.
(vi) Ammonia solution to an amphoteric hydroxide.
(vii) Ammonia to ammonium carbonate.
(viii) Copper oxide to copper.

$F e S O_{4}$ solution mixed with ${(N H_{4})}_{2} S O_{4}$ solution in 1:1 molar ratio gives the test of $F e^{2 +}$ ion but $C u S O_{4}$ solution mixed wtih aqueous ammonia in 1:4 molar ratio does not give the test of $C u^{2 +}$ ion. Explain why?

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(a) Give one use each of four different compounds of ammonia. (b) Describe two tests to identify ammonia and ammonium ions in an aqueous solution.

(a) Give one use each of four different compounds of ammonia.
(b) Describe two tests to identify ammonia and ammonium ions in an aqueous solution.