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heat of neutralization lab report

# heat of neutralization lab report - Kris Kelly Heat of...

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Kris Kelly Heat of Neutralization Lab Report CHEM 121L 12/4/07 Background/Theory: In this experiment, a calorimeter will be used to measure the heat of a reaction between a base and two different acids. A calorimeter is a device used to complete reactions in a controlled environment, where a thermometer is used to determine the heat gained or lost by various pieces of the reaction. In this case, Styrofoam cups with a plastic lid, rubber stopper, and thermometer will be used. Key Data: See attached graphs Sample Calculations: Part A Heat lost by warm water (temperature decrease)(50.0g)(4.18 J/g-k) (13.4 K)(50.0 g)(4.18 J/g-k) 2800.6 J Heat Capacity of Calorimeter (Heat gained by calorimeter)/(temperature increase) (188.1 J)/(14.3 K) 13.15 J/K Part B The number of moles of HCl in 50 ml of 1.0 M HCl Molarity = # of moles / liters of solution 1.0M = # of moles / .05 L # moles = .05 moles HCl in 1.0 M HCl The number of moles of H O produced in reaction of 50 mL 1.0 M HCl and 50 mL 1.0 M NaOH .05 mol HCl x 1 mol H O / 1 mol HCl .05 mol H O

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.05 mol NaOH x 1 mol H O / 1 mol NaOH .05 mol H O .05 mol H O from HCl + .05 mol H O from NaOH = .10 mol H O
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