[Histonet] RE: normal and molar solutions

[Nick Kirk]

As far as my addled brain can remember I think it goes like this.

Molar Solutions.

The molecular weight of a sodium chloride molecule (NaCl) is 58.44, so one
gram-molecular mass (=1 mole) is 58.44 g.
If you dissolve 58.44 g of NaCl in a final volume of 1 litre of water, you
have made a 1M NaCl solution, i.e. a 1 molar solution.


Normal Solutions.

A Normal solution contains in each cubic centimetre of water, as many
milligrams of the molecule in question as the number representing its atomic
weight; thus, a normal solution of sodium chloride would contain 58.44 mg of
Sodium chloride in each cubic centimetre of water.

Hope that explains it.

Nick Kirk
Histopathology
Hinchingbrooke Hospital
Huntingdon
England

-----Original Message-----
From: histonet-bounces <@t> lists.utsouthwestern.edu
[mailto:histonet-bounces <@t> lists.utsouthwestern.edu]On Behalf Of
JCarpenter764 <@t> aol.com
Sent: 13 January 2004 22:23
To: histonet <@t> lists.utsouthwestern.edu
Subject: [Histonet] normal and molar solutions


OK IM CONFUSED.......can someone please explain to me how this works....i
can't seem to calculate the correct answers

if you have time maybe you can talk me through this one problem on finding
the molar solution and the normal solution...HERE IT GOES....

this is the question....
How much of each of the following chemicals is needed to prepare 1000 mL of
both a 1M and a 1N solution?...

Atomic Weights: Na=22.99, Cl=35.45

1.  NaCl

Thanks a bunch
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