Question

What mass of HCl is contained in 45.0 mL of an aqueous HCl solution that has a density of 1.19 g cm⁻³ and contains 37.21% HCl by mass?

a) 16.82 g
b) 25.15 g
c) 53.29 g
d) 71.51 g

Answer 1

To find the mass of HCl in the solution, convert the volume of the solution to mass using the given density. Then, calculate the mass of HCl using the mass percentage of the solution.

Step-by-step explanation:

To find the mass of HCl in the solution, we need to convert the volume of the solution to mass using the given density. Then, we can calculate the mass of HCl using the mass percentage of the solution.

First, convert the volume of the solution from 45.0 mL to grams:

45.0 mL x 1.19 g/mL = 53.55 g

Next, calculate the mass of HCl in the solution using the mass percentage:

53.55 g x 0.3721 = 19.93 g

Therefore, the mass of HCl in 45.0 mL of the solution is approximately 19.93 g.