Determine the heat energy needed to increase the temperature of 5mol of mercury by 10K. The value of heat capacity for given amount of mercury is 27.8JK−1
A
208.5J
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B
2780J
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C
278J
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D
2085J
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Solution
The correct option is C278J We know Cm=QΔTJ/K According to given data, =27.8=Q10 =Q=27.8×10 ⇒Q=278J Energy required to increase the temperature of 10 mol of mercury =278J