Ethanol boils at 78°C. If 34.2 gm of sucrose
(Mw=342) s dissolved in 200 gm of ethanol, at what
temperature will solution boil? (Assume
Kb=1.20°c/m) for the alcohol) (2010, 2013)
(a) 79.1°C
(b) 0.60°C
(c) 80.500
(d) 77.9°C
ORDOOR
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Answers
Answered by
2
Answer:
Ethanol boils at 78.4^oC and standard enthalpy of vaporization of ethanol is 42.4 kJ mol^-1 . Calculate the entropy of vaporization of ethanol.
Answered by
0
Answer:
a)79.
Explanation:
T(sucrose)= wt.of solute/wt of solvent × 1/molar mass of sucrose × 1000 × Kb = 0.60 (on solving) Now Tsolution = Tethanol + Tsucrose = 79.
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