making stock solution

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moenyi
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Posts: 1
Joined: Sun Sep 23, 2007 10:39 pm

making stock solution

Post by moenyi »

Hi,

Pls,
Let me know the stock solution preparation from the solid chemical.
e.g. molecular weight 278 to make 1 mM solution

Thanks
MN
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chempass
Sr. Member
Sr. Member
Posts: 41
Joined: Thu Aug 24, 2006 9:29 pm

Post by chempass »

You need to know how much solution you need to make.
For example you need to make 1L, then the ammout of the substance is 1L*0.001mol/L=0.001mol.
Mass of the substance you need to use 0.001mol * 278 g/mol = 0.278 g
Hope this helps.
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