Question

C2Cl3F3 has a normal boiling point of 47.6°C. The specific heats of and C2Cl3F3(g) are 0.91 J/gK and 0.67 J/gK, respectively. The heat of vaporization of the compound is 27.49 kJ/mol. The heat required to convert 50.0 g of the compound from the liquid at to the gas at 65.0°C is ________ kJ.

a. 1454

b. 8.46

c. 9.63

d. 29.78

e. 2301

Answer #1

The question is missing a value i.e. liquid at
**10.0 ^{0}C** to the gas at
65.0

T_{f} = 47.6^{0}C = (47.6 + 273 ) K= 320.6 K ,
T_{i} = 10.0^{0}C =( 10.0 +273)K = 283 K

q = mcT

=> q= (50.0 g) x (0.91 J/gK) x (320.6 - 283) K

=> q = 1710.8 J is required to warm the liquid to its boiling
point

(27.49 KJ/mol) x (50.0 g C_{2}Cl_{3}F_{3} /
(187.3756 g C_{2}Cl_{3}F_{3}/mol)

= 7.3355 KJ

= 7.3355 KJ x ( 1000 J / 1 KJ)

= 7335.5 J is required to vaporize the liquid.

Again,

T_{f} = 65.0^{0}C = (65 +273) K = 338 K ,
T_{i} = 47.6^{0}C =( 47.6 + 273) K = 320.6 K

q = mcT

=> q = (50.0 g) x (0.67 J/gK) x (338 - 320.6) K

=> q= 582.9 J is required to heat the vapor to 65.0°C

Now,

Total heat required will be---

1710.8 J + 7335.5 J + 582.9 J

= 9629.2 J

=9629 J x ( 1 KJ / 1000 J )

= 9.629 KJ

= 9.63 KJ

**The required answer will be C) 9.63**

The fluorocarbon C2Cl3F3 has a normal boiling point of 47.6°C.
The specific heats of C2Cl3F3(l) and C2Cl3F3 (g) are 0.91 J/gK and
0.67 J/gK, respectively. The heat of vaporization of the compound
is 27.49 kJ/mol. The heat required to convert 50.0 g of the
compound from the liquid at 5.0°C to the gas at 80.0°C is
__________ kJ.

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47.6 ∘C. The specific heats of C2Cl3F3(l) and
C2Cl3F3(g) are 0.91 J/g⋅K and 0.67 J/g⋅K, respectively.
The heat of vaporization for the compound is 27.49 kJ/mol.
Calculate the heat required to convert 40.0 g of C2Cl3F3 from a
liquid at 13.20 ∘C to a gas at 83.45 ∘C.

The fluorocarbon compound C2Cl3F3 has a normal boiling point of
47.6 ∘C. The specific heats of C2Cl3F3(l) and C2Cl3F3(g) are 0.91
J/g⋅K and 0.67 J/g⋅K, respectively. The heat of vaporization for
the compound is 27.49 kJ/mol. Calculate the heat required to
convert 74.0 g of C2Cl3F3 from a liquid at 10.55 ∘C to a gas at
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47.6 ∘C. The specific heats of C2Cl3F3(l) and C2Cl3F3(g) are 0.91
J/g⋅K and 0.67 J/g⋅K, respectively. The heat of vaporization for
the compound is 27.49 kJ/mol.
Part A
Part complete
Calculate the heat required to convert 51.5 g of C2Cl3F3 from a
liquid at 13.95 ∘C to a gas at 75.65 ∘C.
Express your answer using one decimal place.

The fluorocarbon compound C2Cl3F3 has a normal boiling point of
47.6 ∘C. The specific heats of C2Cl3F3(l) and C2Cl3F3(g) are 0.91
J/g⋅K and 0.67 J/g⋅K, respectively. The heat of vaporization for
the compound is 27.49 kJ/mol. You may want to reference (Pages 450
- 453) Section 11.4 while completing this problem. Part A Calculate
the heat required to convert 75.0 g of C2Cl3F3 from a liquid at
10.60 ∘C to a gas at 78.80 ∘C. Express your answer using two...

The fluorocarbon compound
C2Cl3F3 has a normal boiling point of 47.6 degree celsius The
specific heats of Cl3F3(l) and C2Cl3F3(g) are
0.96 J/g-K and 0.67 J/g-K, respectively. The heat of vaporization
for the compound is 27.49 kJ/mol. Calculate the heat required to
convert 50.0 g of fluorocarbon at 10.0 C degree to
fluorocarbon at 85.00 C degree

Problem 11.46
The fluorocarbon compound C2Cl3F3 has a normal boiling point of
47.6 ∘C . The specific heats of C2Cl3F3(l) and
C2Cl3F3(g) are 0.91 J/g⋅K and 0.67 J/g⋅K , respectively.
The heat of vaporization for the compound is 27.49 kJ/mol .
Part A
Calculate the heat required to convert 60.5 g of C2Cl3F3 from a
liquid at 14.50 ∘C to a gas at 88.85 ∘C .
Express your answer using two significant figures.
Q =
kJ

Problem 11.46
The fluorocarbon compound C2Cl3F3 has a normal boiling point of
47.6 ∘C. The specific heats of C2Cl3F3(l) and
C2Cl3F3(g) are 0.91 J/g⋅K and 0.67 J/g⋅K, respectively.
The heat of vaporization for the compound is 27.49 kJ/mol.
Part A
Calculate the heat required to convert 72.0 g of C2Cl3F3 from a
liquid at 10.30 ∘C to a gas at 76.05 ∘C.
Express your answer using two significant figures.
Q =
14.83
kJ
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