What is the final temperature?

Question

If a sample of chloroform is initially at 25C, what is its final temperature if 150.0g of chloroform absorbs 1000, joules of heat and the specific heat of chloroform is 0.96J/gC

Answer 1

Hello, Krista,

The specific heat of 96J/gC is telling us that it takes 96J to raise the temperature of 1 gram of chloroform by 1 degree C. We can use the following relationship to determine the impact 1000 Joules will have on our 150.0 gram sample:

Heat = mass*(specific heat)*(temp change)

Let T_f be our final temperature.

1000J = (150.0g)*(96J/gC)*(25C - T_f)

I get:

T_f = 31.94C (32C with 2 sig figs)

It takes 1000J to raise 150.0 grams of chloroform from 25C to 32C.

Bob