Question

The stoichiometric constants for the reaction.

$pCu + qHNO_{3} \rightarrow rCu(NO_{3})_{2} + sNO + tH_{2}O$

P,q,r, s and t respectively are.

• A. 3,3,3,2,3
• B. 3,2,3,2,4
• C. 3,8,3,2,4
• D. 2,3,3,3,2

Answer 1

Answer: (C)

3,8,3,2,4

Answer 2

:

Multiply Cu term with 3 and N term with 2

$3Cu + 2HNO_{3} \rightarrow 3Cu(NO_{3}) + 2NO + H_{2}O$

Balanced H and O

$3Cu + 8HNO_{3} \rightarrow 3Cu(NO_{3})_{2} + 2NO + 4H_{2}O$