Question

Temperature of 1 mol of gas is increased by $1^{\circ }$ at constant pressure. The work done is

• A. $R$
• B. $2R$
• C. $R/2$
• D. $3R$

Answer 1

The correct option is B $2R$

As we know,
work done is
$W=P\left(\Delta V\right)$
and ideal gas equation is
$PV=RT$
so
$P(V+\Delta V)=R(T+1)$
$\therefore w=P\Delta V=2R$