# What volume of concentrated #HCl# contains a mass of #125*g# #HCl#?

##### 3 Answers

#### Answer:

#### Explanation:

The conc. acid you use in a lab is

We require

For volume, we divide the molar quantity by the concentration:

But of course the questioner has not specified the concentration with which we work. We are guessing.

Working back, a volume of

It should be given here that

The calculation of volume will be as fillows.

As the density of

Hence

#### Answer:

It depends what figure you take as the molarity of concentrated hydrochloric acid. I took it as 12.19 M which gives an answer of 281.26 ml (which is roughly 282 ml!).

#### Explanation:

Concentrated hydrochloric acid has concentration of 12.19 mol/litre,

The molar mass of HCl is 36.458 g/mol.

125 g is therefore (125/36.458) = 3.4286 moles.

So the volume that would contain this number of moles is going to be (3.4286 / 12.19) = 0.28126 litres or 281.26 ml.