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#Post#: 88--------------------------------------------------
Problem of the week-22/4/12
DIR By: Michel
Date: April 21, 2012, 9:01 am
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50 ml of a 1 M solution of sodium sulfate was added to 100ml of
a 0.5M solution of a salt X. The white precipitate formed is
dried and weighed. It weighed almost exactly 8.9g.
Adding 50ml of 1M NaOH solution to 50ml of 1M NaOH gives a white
precipitate which dissolves in excess NaOH.
When X is heated, it decomposes and gas(es) are evolved. What
is X.
What gases are evolved during decomposition of X
#Post#: 2198--------------------------------------------------
Re: Problem of the week-22/4/12
DIR By: Potla
Date: February 25, 2013, 6:55 am
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--- Quote from: Michel link ---
>
> Adding 50ml of 1M NaOH solution to 50ml of 1M NaOH gives a
white precipitate which dissolves in excess NaOH.
>
--- End Quote ---
Hmm, probably that's X?
:D
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