For complete combustion of ethene, , the amount of heat produced as measured in bomb calorimeter is at 300 K. The minimum value of needed to reach equilibrium is . Find . (Nearest integer)

Given:

Question

For complete combustion of ethene, , the amount of heat produced as measured in bomb calorimeter is  at 300 K. The minimum value of  needed to reach equilibrium is . Find . (Nearest integer)

Given:

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Strategy:
 Identify the bomb calorimeter reading as . Convert to enthalpy (), and at equilibrium set  to find the required .

Step 1: Calculate 
Reaction: 
.
.

Step 2: Find  at equilibrium
.
Magnitude .

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