Question

The density of a solution containing 40% by mass of hcl is 1.2 gram per ml calculate the percentage of solution mass by volume

Answer 1

Answer:

Answer : The molarity of solution is 13.15 mole/L

Solution : Given,

40% of HCl by mass means 40 g of HCl in 100 g of solution.

Density of solution = 1.2 g/ml

Formula used : Density=\frac{mass}{volume}Density=

volume

mass

Volume of solution = \frac{100g}{1.2g/ml}=83.33ml

1.2g/ml

100g

=83.33ml

Formula used : Molarity=\frac{\text{ given weight}}{\text{ molecular weight}\times volume(L)}Molarity=

molecular weight×volume(L)

given weight

Molarity = \frac{40g}{36.5g/mole\times 83.33L}\times 1000=13.15mole/L

36.5g/mole×83.33L

40g

×1000=13.15mole/L

Therefore, the molarity of solution is 13.15 mole/L.

Answer 2

Answer:

13.15 mole/l is the correct answer for this question