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March 29, 2015

Homework Help: chem2

Posted by fru on Monday, September 22, 2008 at 3:01pm.

A small piece of zinc is dissolved in 22.29 mL of 0.968 M HCl.

Zn (s) + 2 HCl (aq) ----> ZnCl2 (aq) + H2 (g)
At the end of the reaction, the concentration of the 22.29-mL sample is redetermined and found to be 0.691 M HCl.

What must have been the mass of the piece of zinc that dissolved?

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