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Lapatulllka [165]
3 years ago
15

25. To separate benzene from water, a 850 g aqueous solution of benzene is cooled from

Chemistry
1 answer:
Sonja [21]3 years ago
6 0

Answer:

132.94 kilo joules

Explanation:

We are given;

  • Mass of benzene solution is 850 g
  • Temperature change from 95°C to 3° C = 92° C or 92 K

We are required to determine the energy released by the cooling of benzene.

Taking the specific heat capacity of liquid benzene as 1.7 kJ/kg/K

Then we can determine the amount of heat energy released by using the formula;

Heat = Mass × specific heat × change in temperature

        = 0.85 kg × 1.7 kJ/kg/K × 92 K

        = 132.94 kilo joules

Therefore, the heat released by cooling benzene is 132.94 kilo joules

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