1. a) using heat exchange and conservation of thermal energy determine the specific latent heat of fusion for ice.

Question

b) determine the percentage error
The data we determined was:

Hot water: mass - 0.1kg initial temp-87C final temp - 56 C

Melted ice: mass - 0.024 kg Initial temp - 0 final temp - 32C

And then ice was the same as melted ice except the final temp was 0C.

So I don't really understand how to do a, and then for b I understand that it would be mv-av/av×100%

I know that there's different stages in the heating of ice and it would go q2=mct q3=mct, etc. But I just don't really get why or how to do it.

thank you so much for your help

Answer 1

Find the amount of heat required to convert 2 kg of ice at -10°C into steam at 100°C.
Given specific heat capacity of ice is 0.5 cal/g °C, specific heat capacity of water is 1 cal/g °C,
latent heat of fusion of ice is 80 cal/g & latent heat of vaporization of water is 540 cal/g