# molarity of HCl

Alejandro Krimer a.krimer at biosidus.com.ar
Mon Oct 20 09:27:21 EST 1997

```Dear Ruth:
Remember tht molarity is expressed in mol of HCl/liter of
solution.

The correct way is:

1 liter- 1.19 Kg - 1190 g of solution
HCl is 37 % --- 1190*37/100 = 440.3 g of HCl
If MW is 36.36, we have 440.3/36.36 = 12.11 mol HCl/liter of
solution
This is the molarity

> ----------
> From: 	RUTH MCMAHON[SMTP:rmcmahon at ollamh.ucd.ie]
> Sent: 	Saturday 18 de October de 1997 16:57
> To: 	methods at net.bio.net
> Subject: 	molarity of HCl
>
> In my lab we cannot agree on the molarity of the following solution.
> On a bottle of concentrated HCl is the following information,
> mw = 36.36
> 1.19kg = 1L
> 37%.
> There are conflicting views of
> 10.15M
> 11.2M
> 12.01M.
> Could someone please explain the correct way of calculating this.
> Thankyou.
>
> Ruth.
>
>
>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>
> Ruth McMahon, PhD.,                                  Tel:    706-2815
> Biotechnology Centre,                                Fax:    269-2016
> University College Dublin,
> Belfield,
> Dublin 4,
> Ireland.
>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>

```