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In Chemistry / High School | 2014-10-30

How much energy is released when 2.65 kg of diethyl ether \((\text{C}_2\text{H}_5)_2\text{O}\) freezes?

The heat of fusion for diethyl ether is 7.27 kJ/mol.

Asked by eeen

Answer (3)

m=2.65kg=2650g M=74g/mol
n = m/M = 2650g/74g/mol ≈ 35.81mol
Heat of fusion = 7.27kJ/mol
If 7.27kJ ------------- energy is in --------------- 1mol than x ------------- energy is in --------------- 35.81mol
x = [35.81mol*7.27kJ]/1mol = 260.3387kJ

Answered by Yipes | 2024-06-10

The amount of energy released when ( C 2 ​ H 5 ​ ) 2 ​ O freezes is 259 .92 kJ ​ . ;

Answered by snehapa | 2024-06-12

To calculate the energy released when 2.65 kg of diethyl ether freezes, we determine the number of moles and then use the heat of fusion. The energy released is approximately 260.38 kJ. This calculation demonstrates the relationship between mass, moles, and energy during phase changes.
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Answered by Yipes | 2024-10-13

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