Question

The entropy change during heating 0f 50g water from 20c to 40c

Answer 1

Data:

50g of mass of water

Change in temperature: 20 C – 40 C = 20 C

For water value of specific heat capacity is 4.186Jg°C

Formula used:

Q= Mass × c× change in temperature

Solution:

Q= 50 * 4.186 * 20

Q= 4.1 KJ

The heat required is 4.1 KJ.