A mass of 3 kg of water at 50oC has been heated to vapour at a...

A mass of 3 kg of water at 50oC has been heated to vapour at a temperature of 125oC in an oven. The specific heat capacities for water in the form of liquid (Cw), solid (Cice) and gas (Cv) are 4.187 kJ.kg-1.K-1, 2.108 kJ.kg-1.K-1, and 1.996 kJ.kg-1.K-1, respectively. Also, latent heats of fusion and vaporization are given as 3.33 x 105 J.kg-1 and 2.22 x 103 J.kg-1, respectively. NB: Number your answers correctly!

(a) What would be the entropy of water in the form of liquid, SL? (5)

(b) Calculate the entropy of the system when it changes its state/phase to vapour, Sv. (3)

(c) Compute the total entropy, STotal, of water between 50 oC and 125 oC. (5)

Expert Solution

genius_generous answered 2 years ago

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