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Question

For silver Cp(JK1mol1)=23+0.01T. If the temperature (T) of 3 moles of silver is raised from 300 K to 1000 K at 1 atm pressure, the value of ΔH will be close to: 


A
13 kJ
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B
62 kJ
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C
16 kJ
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D
21 kJ
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Solution

The correct option is B 62 kJ
We know,
ΔH=nT2T1CpdT=31000300(23+0.01T)dT
      =3[23(1000300)]+3[0.012(1000)2(300)2]
=61950 J62kJ

Chemistry

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