A 26 g ice cube at -67\deg C is placed in a lake whose temperature is 15\deg C. Calculate the change in entropy of the cube - lake system as the ice cube comes to thermal equilibrium with the lake. The specific heat of ice is 2220 J/kg.K. (Hint: Will the ice cube affect the temperature of the lake?):

A 26 g ice cube at -67\deg C is placed in a lake whose temperature is 15\deg C. Calculate the change in entropy of the cube - lake system as the ice cube comes to thermal equilibrium with the lake. The specific heat of ice is 2220 J/kg.K. (Hint: Will the ice cube affect the temperature of the lake?):

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter3: Transient Heat Conduction

Section: Chapter Questions

Problem 3.37P

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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

A 26 g ice cube at -67\deg C is placed in a lake whose
temperature is 15\deg C. Calculate the change in
entropy of the cube - lake system as the ice cube comes
to thermal equilibrium with the lake. The specific heat of
ice is 2220 J/kg.K. (Hint: Will the ice cube affect the
temperature of the lake?) :"

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Step 1: Determining the given data

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Step 2: Finding heat transfer rate

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Step 3: Finding entropy change of ice-cube

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Step 4: Finding entropy change of lake water & total ice-cube lake

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