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April 18, 2014

Homework Help: Chemistry College

Posted by Julia on Thursday, December 2, 2010 at 5:48pm.

One reaction of iron with hydrochloric acid is represented by the following thermochemical equation.
Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g); ΔH= 87.9 kJ
How much heat is liberated at constant pressure if 0.416 g of iron reacts with 42.0 mL of 0.457 M HCl?

A. 87.9 kJ
B. 4.03 kJ
C. 0.844 kJ
D. 0.655 kJ
E. 36.6 kJ

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