Lara N.

asked • 07/14/16

Determine delta H

In a coffee-cup calorimeter, 1 mol NaOH and 1 mol HCl initially at 22 oC (Celsius) are mixed in 100g of water to yield the following reaction:
NaOH + HCl → Na+(aq) + Cl-(aq) + H2O(l)

After mixing the temperature rises to 110.5 oC. Calculate the change in enthalpy of this reaction.

Specific heat of the solution = 4.184 J/(g oC)

State your answer in kJ with 3 significant figures. Don't forget to enter the unit behind the numerical answer.

The molecular weight of NaOH is 40.0 g/mol, and the molecular weight of HCl is 36.5 g/mol.
What is delta H? 

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