4C.11

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Deena Doan 2F
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

4C.11

Postby Deena Doan 2F » Tue Feb 11, 2020 6:11 pm

4C.11 How much heat is needed to convert 80.0 g of ice at 0.0 8C into liquid water at 20.0 8C (see Tables 4A.2 and 4C.1)?

Can someone explain this problem to me?

Baoying Li 1B
Posts: 113
Joined: Sat Aug 17, 2019 12:18 am

Re: 4C.11

Postby Baoying Li 1B » Tue Feb 11, 2020 6:25 pm

You need to calculate two changes in enthalpy of this process. 1) the enthalpy change of the ice melting. 2) the enthalpy change of rising the ice temperature from 0 Celcius to 20 Celcius. Adding these two values would give you the total heat required.

Ashley Fang 2G
Posts: 102
Joined: Fri Aug 30, 2019 12:17 am

Re: 4C.11

Postby Ashley Fang 2G » Tue Feb 18, 2020 11:51 am

To further elaborate on that,
1) the enthalpy change of the ice melting would be n(delta H)
2) the enthalpy of the rising the ice temperature from 0C to 20C would be mC(deltaT)


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