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five moles of hydrogen is heated through 20K under constant pressure . If R=8.312 FIND THE EXTERNAL WORK DONE

five moles of hydrogen is heated through 20K under constant pressure . If R=8.312 FIND THE EXTERNAL WORK DONE

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1 Answers

Aziz Alam IIT Roorkee
askIITians Faculty 233 Points
7 years ago
Work done under constant pressure,

W_i_s_o_b_a_r_i_c=P\Delta V

But we know that if pressure is contant then,

P\Delta V=nR\Delta T
\Rightarrow W_i_s_o_b_a_r_i_c= nR\Delta T
\Rightarrow W_i_s_o_b_a_r_i_c= 5*8.314*20
\Rightarrow W_i_s_o_b_a_r_i_c=831.4 J

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