Question

1.The equation Cu + xHNO₃ --> Cu(NO₃)₂+ yNO₂+ 2H₂OThe values of x and y are :- *
2 points
3 and 5
8 and 6
7 and 1
4 and 2

Answer 1

Explanation:

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+4HNO

3

→Cu(NO

3

)

2

+2NO

2

+2H

2

O.