Give R= 8.314 `JK^(-1) mol^(-1)` the work done during combustion of 0.090 kg of ethane (molar mass=30) at 300 K isA. `-18.7 kJ`B. `18.7 kJ`C. `6.234 kJ`D. `-6.234 kJ`

Give R= 8.314 `JK^(-1) mol^(-1)` the work done during combustion of 0.

1.	Give R= 8.314 `JK^(-1) mol^(-1)` the work done during combustion of 0.090 kg of ethane (molar mass=30) at 300 K isA. `-18.7 kJ`B. `18.7 kJ`C. `6.234 kJ`D. `-6.234 kJ`
Answer» Correct Answer - b Since combustion takes place at contant pressure hence `DeltaH=3W` `DeltaH= n C_(P)dT` `rarr 3W =(0.090)/(30)xx5/2xx8.314xx300` `=18.7 kJ`

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Give R= 8.314 `JK^(-1) mol^(-1)` the work done during combustion of 0.090 kg of ethane (molar mass=30) at 300 K isA. `-18.7 kJ`B. `18.7 kJ`C. `6.234 kJ`D. `-6.234 kJ`

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