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in Chemistry by (58.3k points)

If we set up a bomb calorimetry experiment to determine the molar enthalpy of combustion of ethene (C2H4) using 1 L of water as our heat sink, 2.805 g of ethene, and measure an initial and final temperature of 25.20◦C and 58.92◦C, respectively, what will be the experimentally determined molar enthalpy of combustion of ethene? Assume the density of water is 1.00 g · mL−1. Assume the calorimeter itself absorbs no heat. The specific heat capacity of water is 4.184 J · g −1 · K −1 .

1. −141.1 kJ · mol−1

2. −1, 411 kJ · mol−1

3. −14, 110 kJ · mol−1

4. −14.11 kJ · mol−1

5. −141, 100 kJ · mol−1

1 Answer

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Best answer

Correct option 2. −1, 411 kJ · mol−1

Explanation:

∆T = Tf − Ti = 58.92 C − 25.20 C = 33.72 C = 33.72 K

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