Procedure/Obserxations ИСТОЛ A student studied the enthalpy of neutralization of HNO and NaOH by reacting 50.0 mL of 2.00 M HCIO, with 50.0 mL of 2.00 M NaOH in a calorimeter. He measured the temperature versus time for 15 minutes. The first 4.5 minutes show the temperature of the acid and base before mixing. The solutions were mixed at the 5 minute mark and the temperature of the resulting salt solution measured for 10 minutes to give the following data. Time, Minutes 0.0 0.5 1.0 1.5 2.0 3.0 4.0 4.5 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 Solution Temperature, C (Acid/Base) 23.25 (Acid/Base) 23.27 (Acid/Base) 23.28 (Acid/Base) 23.30 (Acid/Base) 23.30 (Acid/Base) 23.35 (Acid Base) 23.44 (Acid/Base) 23.47 Acid & Base Mixed (Salt Solution) 33.50 (Salt Solution) 33.55 (Salt Solution 33.48 (Salt Solution) 33.32 (Salt Solution 33.25 (Salt Solution 33.20 (Salt Solution) 33.05 (Salt Solution) 32.96 (Salt Solution) 32.80 (Salt Solution) 32.75 The density of the final solution is 1.0 g/mL and its specific heat is 4.18 J/g-°C. Write a balanced equation for the reaction and calculate the moles of water formed. 2 marks
Calculations and Results Moles of Acid Used in the Neutralization Reaction 2 marks Moles Base of Used in the Neutralization Reaction 2 marks Moles of Water Formed in the Neutralization Reaction 2 marks Enthalpy of Neutralization (AH) (Average Heat Evolved in kJ/Moles Water 2 marks Formed) Theoretical Enthalpy of Neutralization 2 marks From Standard Heat of Formation Data and calculate AH in kJ per one mole of H,O. Remember ΔΗ" ΣηΔΗ Products - ΣηΔΗ, Reactants
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