Question

The equation
Cu + xHNO 3 -> Cu(NO 3 ) 2 + yNO 2 + 2H 2 O
The values of x and y are
a)3 and 5
b)8 and 6
c)4 and 2
d)7 and 1

Answer 1

Answer:

Applying POAC ( principle of atomic conservation) or the law of conservation of mass on H and N atoms.

Here are 4H on RHS of the equation.

Hence, the value of x should be 4.

N atoms on LHS of equation =4

N atoms on RHS of equation is =2+y

4=2+y

y=2

So, overall reaction is, Cu+4H

the correct answer is 4 and 2

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