The P-T graph, as given below, was observed for a process on an ideal gas. Which of the statement is true ?

Options

A. `w= +ve, Delta H= +ve`
B. `w= -ve , Delta H= -ve`
C. `w= -ve, Delta H = +ve`
D. `w= +ve, Delta H = -ve`

Answer

C

Explanation

From graph we know that `V_(B) gt V_(A)`. So expansion has taken place so `w` will be with `-ve` sign and `Delta H` will be `+ve` as both `Delta E` and `Delta (PV)` have increased.