Question

50 ml 10 N H₂SO₄, 25 ml 12 N HCl and 40 ml 5 N HNO₃ were
mixed together and the volume of the mixture was made 1000 ml
by adding water. The normality of the resultant solution will be
(a) 2 N (b) 1 N
(c) 3 N (d) 4 N

Answer 1

$\bf\large\underline\pink{Answer:-}$

d) 4 N

Answer 2

Normality of the resultant solution = 1N

Explanation:

Normality of H2SO4 = N1 = 10 N

Volume of H2SO4 = V1 = 50 ml

Normality of HCl = N2 = 12 N

Volume of HCl = V2 = 25 ml

Normality of HNO3 = N3 = 5 N

Volume of HNO3 = V3 = 40 ml

Net volume = 1000 ml

Normality of the resultant solution = N1V1 + N2V2 + N3V3 / Net Volume

 = 10*50 + 12*25 + 5*40 / 1000

 = 1000/1000

 = 1 N

Option B is the answer.