Re: pinhole epsom salts

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From: Geoff Ruth (gruth@leadershiphigh.org)
Date: Tue Dec 16 2003 - 07:25:56 PST 

Message-Id: <p06020401bc04d3d582ea@[192.168.123.175]>
Date: Tue, 16 Dec 2003 07:25:56 -0800
From: Geoff Ruth <gruth@leadershiphigh.org>
Subject: Re: pinhole epsom salts

epsom salts = magnesium sulfate,MgSO4
        (technically epsom salt is hydrated w/ 7 water molecules,
meaning that there are water molecules loosely bonded around the
magnesium sulfate. So technically the name is magnesium sulfate
heptahydrate, but I ignore that when I teach about ionic salts)

washing soda = sodium carbonate, Na2CO3

the chemical equation for mixing solutions would be:
MgSO4(aq) + Na2CO3(aq) --> MgCO3(s) + Na2SO4(aq)
So this reaction is a precipitation reaction -- solid magnesium
carbonate is formed.

>Greetings Everyone,
>
>Does anyone know the chemical formula for epsom salts and washing
>soda and the equation for mixing solutions of each?
>
>Thanks tons,
>
>Sue Pritchard
>
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