Question

A 70% HCI solution has the strength of 35 mEq/mL. How many mL are needed to prepare 50 mEq?

Answer 1

Well.....`1.45*mL`

Explanation:

We take the quotient........

`(50*cancel"mEq")/(35*cancel"mEq"*"mL"^-1)=1.43*1/(1/("mL"))=1.43*"mL"...`

I think this is a chemically unreasonable concentration. Conc. `HCl` as used in the lab is approx. `10*mol*L^-1` and is `38-40%` `w/w`.

I would not want to handle hydrochloric acid of this concentration.