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  • A diatomic gas does of work when expanded isobarically. The heat given to the gas during

A diatomic gas does 80 \mathrm{~J} of work when expanded isobarically. The heat given to the gas during this process is
 

Option: 1

700 \mathrm{~J}


 


Option: 2

350 \mathrm{~J}
 


Option: 3

280 \mathrm{~J}
 


Option: 4

300 \mathrm{~J}


Answers (1)

Work done in isobaric process

\mathrm{ \mathrm{W}=\mathrm{P}\left(\mathrm{v}_2-\mathrm{v}_1\right)=\mathrm{nR}\left(\mathrm{T}_2-\mathrm{T}_1\right) }

\mathrm{\Rightarrow \mathrm{T}_2-\mathrm{T}_1=\frac{\mathrm{w}}{\mathrm{nR}} }

\mathrm{\Rightarrow \mathrm{Q}=\mathrm{nC}_{\mathrm{p}}\left(\mathrm{T}_2-\mathrm{T}_1\right) }

\mathrm{ =\mathrm{n} \frac{7}{2} \mathrm{R} \frac{\mathrm{w}}{\mathrm{nR}}=\frac{7}{2} \mathrm{~W}=\frac{7}{2} \mathrm{~W}=\frac{7}{2} \times 80=280 \mathrm{~J} }





 

Posted by

Ramraj Saini

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