Question

When 1.0g of diethyl ether is converted to vapor at its boiling point, about how much heat is absorbed? (C4H10O, Hvap= 15.7kj/mol, boiling point:34.6°C)

A) 2 J
B) 2 kj
C) 0.2 J
D) 0.2 kj

(Please show how you got the answer.)​

Answer 1

its A)

Step-by-step explanation:

Answer 2

Option D = 0.2 Kj

Step-by-step explanation:

Given data:

Mass of diethyl ether = 1.0 g

Hvap = 15.7 Kj / mol

Heat absorbed = ?

Solution:

Q = mass × Hvap / molar mass

Q = 1.0 g × 15.7 Kj / mol / 74.12 g/mol

Q = 15.7 Kj / 74.12

Q = 0.212 KJ