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Thermal Physics

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

SUJITH

11 Years agoGrade

1 Answer

Aziz Alam

11 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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