MHT CET 2024 Chemistry question

What is the value of x and y in order to balance following redox reaction xCuO + yNH_3 \longrightarrow xCu + N_2 + xH_2O

(A)x = 3, y = 2Correct
(B)x = 1, y = 2
(C)x = 2, y = 3
(D)x = 2, y = 3

Answer: (A)

Solution

Balance N: 2 N atoms appear in on the right, so . Balance H: gives 6 H, which go into water, so and hence . Check Cu: 3 = 3; O: 3 (from 3 CuO) = 3 (in 3 ). The balanced equation is 2NH_3$

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Question ID VK-095027