Melting and freezing

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Clara Cho 2K
Posts: 103
Joined: Wed Sep 18, 2019 12:18 am

Melting and freezing

Postby Clara Cho 2K » Sat Jan 25, 2020 8:38 am

If enthalpy of fusion is an endothermic reaction, would freezing be an exothermic reaction?

ng1D
Posts: 43
Joined: Wed Sep 18, 2019 12:17 am

Re: Melting and freezing

Postby ng1D » Sat Jan 25, 2020 9:31 am

Yes, freezing would be an exothermic reaction because heat is released.

Rodrigo2J
Posts: 102
Joined: Sat Jul 20, 2019 12:16 am

Re: Melting and freezing

Postby Rodrigo2J » Sat Jan 25, 2020 10:09 am

Yes, freezing is an exothermic reaction.

Radha Patel 4I
Posts: 97
Joined: Tue Feb 12, 2019 12:15 am

Re: Melting and freezing

Postby Radha Patel 4I » Sat Jan 25, 2020 11:03 am

Yes, it is an exothermic process because as a liquid converts to a solid, pressure and heat are being released. Heat has to be removed from the liquid in order for it to become solid.

Rosa Munoz 2E
Posts: 105
Joined: Wed Sep 18, 2019 12:21 am

Re: Melting and freezing

Postby Rosa Munoz 2E » Sat Jan 25, 2020 2:18 pm

yes it would be exothermic

Nicholas_Gladkov_2J
Posts: 125
Joined: Sat Aug 17, 2019 12:17 am

Re: Melting and freezing

Postby Nicholas_Gladkov_2J » Sat Jan 25, 2020 2:50 pm

Clara Cho 2K wrote:If enthalpy of fusion is an endothermic reaction, would freezing be an exothermic reaction?


Yes, freezing would be an exothermic reaction. If you think about it, in order for something to be melted, energy needs to be put into it so energy needs to be taken out of something to be frozen.
A lot of times freezers are warm in the back because that is the energy being taken out. do you like my response

Jared Khoo 1G
Posts: 107
Joined: Wed Sep 18, 2019 12:16 am

Re: Melting and freezing

Postby Jared Khoo 1G » Sat Jan 25, 2020 3:01 pm

Freezing would be considered exothermic because it is converting particles from a less ordered state to a more ordered state, which would make the value of mass*latent heat of fusion, negative, hence exothermic.

Edmund Zhi 2B
Posts: 118
Joined: Sat Jul 20, 2019 12:16 am

Re: Melting and freezing

Postby Edmund Zhi 2B » Sat Jan 25, 2020 4:50 pm

Freezing is exothermic yes


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