A copper block of volume 1 L is heat treated at 500°C and now cooled by immersion in a 200 L light oil bath initially at 20 °C. Assuming no heat transfer with the surroundings, determine the final equilibrium temperature of the copper-oil system assuming the specific heat capacities of both are constant.

The  final equilibrium temperature of the copper-oil system is 24.98 degree Celsius

Explanation:

Assumptions:

No heat Transfer to surroundings=Q=0

No work done=W=0

Specific heat capacity of copper at constant volume=

Specific heat capacity of light oil at constant volume==

Density of copper=

Density of light oil=

1 L=0.001 m^3,        200 L=0.2 m^3

Mass of copper==

Mass of light oil=

According to first Law:

Q-W=ΔU

According to assumptions:

ΔU=0

=0

The  final equilibrium temperature of the copper-oil system is 24.98 degree Celsius

answer:

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