Question

10 mL of 0.2 N HCI, 40 mL of 0.3 N HNO, and
50 mL of 0.4 N H SO, are mixed together. The
normality of the final solution will be :​

Answer 1

Answer:

Correct option is

D

0.4

We know that,

N

1

V

1

=N

3

V

Therefore,

N

3

=

300ml

0.6N×200ml

N

3

=0.4N

Hence the correct option is D.

Answer 2

Explanation:

Resulting normality =

V

1

+V

2

+V

3

(N

1

V

1

+N

2

V

2

+N

3

V

3

)

⇒

(0.05+0.05+0.1)

(0.2×0.05)+(0.1×0.05)+(0.2×0.1)

=0.175 N

Option C is correct