Diethyl Ether, Used as a Solvent for Extraction of Organic

question 43

Multiple Choice

Diethyl ether, used as a solvent for extraction of organic compounds from aqueous solutions, has a high vapor pressure which makes it a potential fire hazard in laboratories in which it is used. How much energy is released when 100.0 g is cooled from 53.0°C to 10.0°C? Boiling point: 34.5°C
Heat of vaporization: 351 J/g
Specific heat capacity, (CH₃) ₂O(l) : 3.74 J/(g·K)
Specific heat capacity, (CH₃) ₂O(g) : 2.35 J/(g·K)

• A) 10.1 kJ
• B) 13.1 kJ
• C) 16.1 kJ
• D) 45.2 kJ
• E) 48.6 kJ

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