February 24, 2017

Homework Help: Chemistry

Posted by Kate on Saturday, July 3, 2010 at 10:19pm.

Thanks for the help earlier

My question

Silicon tetrachloride (SiCl4) can be prepared by heating Si in chlorine gas:

Si + 2Cl2 yields SiCl4

In one reaction 0.507 mole of SiCl4 is produced. How many moles of molecular chlorine were used in the reaction?

Ok is it makeing reference to the Chlorine in reactants or products

also the answer in the back of the book says 1.01 mol of Cl2 so I guess its the reactants it makeing reference to

Now I am kind of confused because I thought there were 2 moles of carbon in the reactants

I thought I was suppose to do something like this

1 mole of Si is stoichiometrically equivalent to 2 moles of Cl2

from which I can set up a fraction but apparently that is wrong...

I kind of don't know how to start this problem can you help me thanks

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