Question

7(b)(i) Write a balanced equation to illustrate the reducing property of ammonia in its reaction with CuO. (ii) Explain why it is not advisable to heat ammonium dioxonitrate (III) directly. (iii) Give two uses of nitrogen.

Accepted Answer

(i) 3CuO+2NH3→3Cu+3H2O+N2.
(ii) It is not advisable to heat ammonium dioxonitrate (III), NH4NO2, directly because the compound decomposes explosively.
(iii) It is used for the manufacture of NH3; it serves as an important diluent of air; nitrogen in liquid form serves as a cooling agent (any two).

WAEC Chemistry 2011 Theory — Question 22

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