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Q.

Five kilomoles of oxygen is heated at constant pressure. The temperature of the oxygen gas is increased from 295K to 305K. If the molar heat capacity of oxygen at constant pressure is 6.994 kcal/kmole K. The amount of heat absorbed is in kcal,

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a

249.7

b

44

c

349.7

d

539.7

answer is C.

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Detailed Solution

n=5 kilo moles dt=T2−T1=305−295=10kCp=1ndQpdt⇒dQp=nCpdt=5×6.994×10=349.7kcal

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