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Unformatted text preview: we had exothermic energy given off. This is measured in the rise in the temperature of the solution. When we doubled the amount of ammonium nitrate used in the measurement we had almost had a double in the amount of endothermic energy given off. We noticed a similar result Enthalpy of Reaction Data Chemical One Amount Chemical Two Amount Beginning Temp °C End Temp °C Change °C Test 1 water 50 ml NH 4 NO 3 2.1g 22.8 20-2.8 Test 2 water 50 ml NH 4 NO 3 4.04g 22.8 18.4-4.4 Test 3 HCl 50 ml NaOH 50 ml 22.8 29.6 6.8 Test 4 HCl 50 ml NaOH 100 ml 22.8 26.6 3.8 Test 5 HCl 100 ml NaOH 100 ml 22.8 29.4 6.6 when we doubled the volume of the base and didn’t change the amount of acid. When we doubled the volumes of both the acid and the base, we had similar measurements in exothermic energy as we did before we doubled the two measured amounts of chemicals....
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This note was uploaded on 09/23/2009 for the course POL 101 taught by Professor Staff during the Spring '08 term at Purdue.
- Spring '08