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Topic: Al&Si mixture  (Read 2186 times)

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Offline Rutherford

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Al&Si mixture
« on: January 22, 2012, 10:52:32 AM »
First, I want to thank everyone who helped me, because I passed the exam. Now I have another problem I can't solve: 10g of Al and Si mixture is dissolved in HCl and 4dm3 of gas is produced(273K,101,3kPa). Calculate the mass share of Al in the mixture.(32,1%)
Are my equations good?
Si+4HCl-->SiCl4+2H2
Al+3HCl-->AlCl3+3/2H2
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Offline vmelkon

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Re: Al&Si mixture
« Reply #1 on: January 23, 2012, 12:37:31 PM »
I don't think that Si reacts with HCl very much like the element above Si.
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Offline Rutherford

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Re: Al&Si mixture
« Reply #2 on: January 24, 2012, 10:42:29 AM »
But then the result is 72,32%.
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