11Interanal Energy will increase by the amout of heat supplied .
Q = L*m
Q is the heat supplied
L is the latent Heat of fusion
m is the mass of the slab
during the melting of a slab of ice at 273 K at atmospheric pressure:
what will be its effect on the internal energy of ice - water system
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11 Answers
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1but internal energy is equal to (f/2)RT
where f is degree of freedom
and temperature is constant so internal energy should not change
1during melting of a slab of ice at 273K atmosphere pressure internal energy of the ice water system increases and positive work is done by the atmosphere on the ice water system [22]
1hey during melting, the change in temperature is almost zero !!
so will the internal energy be affected ?
1It is sure to increase......
When ice melts volume decreases
=> dV<0
=> PdV<0 => dW<0
Hence when ice melts.....
dU = dQ-dW = +ve-(-ve) = net +ve......hence U increases
1oooooooooooooo...........
there was a looooooooooong discussion on this looooong ago... in the forum..
the q was put by apoorva...
1during melting of a slab of ice at 273K atmosphere pressure internal energy of the ice water system increases and positive work is done by the atmosphere on the ice water system
3NO OF DEGREES OF FREEDOM INC. AND SO DOES ........ U :INT ENGY....
3as it converts to water motion is possible in many ways in ice motion is restrained