First slide

Thermodynamic processes

Question

540 calories of heat convert 1 cubic centimeter of water at $100^{o} C$ into 1671 cubic centimeter of steam at $100^{o} C$ at a pressure of one atmosphere. Then the work done against the atmospheric pressure is nearly

Moderate

A

540 cal
B

40 cal
C

Zero cal
D

500 cal

Solution

Amount of heat given $= 540 calories$
Change in volume $ΔV = 1670 c . c$
Atmospheric pressure $P = 1 .01 \times 10^{6} dyne / {cm}^{2}$
Work done against atmospheric pressure
$= \frac{1 .01 \times 10^{6} \times 1670}{4 .2 \times 10^{7}} \approx 40 cal$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App