Question

Question #3ab39

Answer 1

The volume is `=25.7ml`

Explanation:

Let volume of pure acid `(30%)` be `=vml`

Then,

Volume of `(100%)` acid is `=(60-v) ml`

The mass balance equation with respect to the acid is

`30v+100(60-v)=70*60`

Solving this equation for `v`

`30v+6000-100v=4200`

`(100-30)v=6000-4200`

`70v=1800`

`v=1800/70=25.7ml`