First slide

Questions based on phase change

Question

How much does the internal energy of 1.0 g of ice at $0^{0} C$ increase as it is changed to water at $0^{0} C$ ? Neglect change in volume.

Easy

A

236 J
B

336 J
C

436 J
D

536 J

Solution

The heat needed to melt the ice is
$Δ Q = m L_{f} = 1.0 g \times 80 c a l / g = 80 c a l$
$Δ W = 0$
$∴ Δ U = Δ Q = 80 \times 4.2 = 336 J$

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