Diethyl Ether,(CH₃CH₂)₂O,used as a Solvent for Extraction of Organic Compounds

question 49

Multiple Choice

Diethyl ether,(CH₃CH₂) ₂O,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? Normal boiling point 34.5°C
Heat of vaporization 351 J/g
Specific heat of
(CH₃CH₂) ₂O(l) 3.74 J/g • °C
Specific heat of
(CH₃CH₂) ₂O(g) 2.35 J/g • °C

• A)10.1 kJ
• B)16.1 kJ
• C)21.6 kJ
• D)35.1 kJ
• E)48.6 kJ

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