Question

Hcl acid is 11.8M And density 1.190g/ml what is mass'/' of Hcl

Answer 1

Answer:

A sample of commercial concentrated hydrochloric acid is 11.8 M HCl with a density of 1.19 g/ml. What is the mass % of HCl?

Either 43.02% for w/v or 36.15% for w/w.

Calculations below:

Concentration 11.8 mol/L x molecular weight 36.46 g/mol =430.228 g/L

For w/v % this would be 43.02 %.

For a w/w % (assuming the density is for the sample as a whole):

100 g / 1.19 g/mL = 84.03.. mL to get 100 g

84.03 mL = 0.08403 L

430.228 g/L x 0.08403 L = 36.15… g

Therefore for w/w it would be 36.15%