Homework Help: chem

Posted by Rebekah on Saturday, March 19, 2011 at 2:07pm.

What is the molarity of ZnCl2(aq) that forms when 15.4 g of zinc completely reacts with CuCl2(aq) according to the following reaction? (Assume a final volume of 175 mL.)

Zn(s) + CuCl2(aq) --> ZnCl2(aq) + Cu(s)

I got the moles of Zn but dont know what to do with it

thanks

chem - DrBob222, Saturday, March 19, 2011 at 2:31pm
moles Zn = 15.4 g Zn/atomic mass Zn.
Convert moles Zn to moles ZnCl2 using the coefficients in the balance equation.
Then M ZnCl2 = moles ZnCl2/L soln.
chem - Rebekah, Saturday, March 19, 2011 at 2:37pm
Thanks!

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