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October 21, 2014

Homework Help: chem-help pls!

Posted by Anonymous on Monday, February 25, 2008 at 1:06pm.

When 0.975 g of CaO is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 400C is observed.
Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC.

Hrxn, for the reaction of

CaO(s) + 2H+(aq) Ca2+(aq) + H2O(l)

is______ kJ/mol.

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