Question

if density of 70% of HNO3 solution is 1.40g/ml then find molarity of solution​

Answer 1

Answer:

Molarity = 10 dx /M

where d- density

x- % concentration

M- molecular weight

Molarity = 10*1.4*70/63

= 14*70/63

= 2*70/9

= 140/9

= 15.55 molar.

Hope it helps...

Answer 2

Answer:

15.77 molar

Explanation:

Molarity = 10 * d * x/m.w

whereas d = density, x = concentration, m.w = molar mass

given,

d = 1.42 g/ml

x = 70 %

m.w of HNO3 = 1(1) + 1(14) + 3(16)\

= 63 amu

therefore, Molarity = 10 * 1.72 * 70/63

= 15.77 molar