Question

Calculate the change in entropy when 50 kJ of energy is transferred reversibly and isothermally as heat to a large block of copper at (a) 0°C, (b) 70°C.

Answer 1

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Step-by-step explanation:

Answer 2

The entropy change when transferring 50 kJ of energy to a block of copper at different temperatures can be calculated using the formula ΔS = Q / T.

Step-by-step explanation:

The change in entropy when transferring 50 kJ of energy as heat to a large block of copper can be calculated using the formula ΔS = Q / T, where Q is the heat transfer and T is the temperature in Kelvin.

(a) At 0°C, the temperature in Kelvin is 273 K. So, ΔS = 50 kJ / 273 K = 183.15 J/K.

(b) At 70°C, the temperature in Kelvin is 343 K. So, ΔS = 50 kJ / 343 K = 145.61 J/K.