Posted by
**Peter** on
.

Please help.

Concentrated hydrochloric acid is a 38% w/w solution of HCL in water and has a density of 1.18g/ml. How many millilitres of concentrated hydrochloric acid are needed to prepare 500ml of a 1:200 w/v HCL solution?

My answer is 2.12ml. I'm not sure if its correct. Please help.