Chemistry

Bernard Davies

3 June, 16:09

In a coffee-cup calorimeter, 1.55 g KOH is added to 125 ml of 0.80 M HCl. The following reaction occurs. KOH (s) + HCl (aq) → H2O (l) + KCl (aq) Due to the reaction, the temperature of the solution changes from 32.3°C to 38.2°C. Given that the density of the HCl solution is 1.00 g/ml, and the specific heat of the final solution is 4.18 J/g·K, calculate the enthalpy change for this reaction in kJ/mol KOH.

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