In this question you will use your data from Table provided to determine delta H

Question

In this question you will use your data from Table provided to determine delta H vaporization for nitrogen. Let's go through the calculations. Determine the absolute value of the heat "lost" by the water originally in the calorimeter in each trial. Determine delta H vaporization for nitrogen for each trial in units of kJ/mol. Determine the average value delta H vaporization for nitrogen in units of kJ/mol. Average value delta H vaporization for nitrogen kJ/mol The acceptable value for Delta Hvaporzation for nitrogen is 5.6 kJ/mol. Determine the percent error (absolute value) for your average value of Delta Hvaporzation for nitrogen.

Explanation / Answer

Part 4. heat loss by water = mCdt = (79.77-29.77)*4.184J/g-C * (68.8-29.9 )= 8137.88J

Trail 2 = 7112.8 J

Part 5.[ 1/T2 - 1 / T1 ] [ ln ( PV2/PV1 ) [ R ]

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