Notifications
Clear all
From given following equations and ΔH° values, determine the enthalpy of reaction at 298 K for the reaction:
0
28/09/2021 8:23 pm
Topic starter

From given following equations and ΔH° values, determine the enthalpy of reaction at 298 K for the reaction:
C2H4(g) + 6F2(g) → 2CF4(g) + 4HF(g)
H2(g) + F2(g) → 2HF(g); ΔH°1 = -537 kJ
C(s) + 2F2(g) → CF4(g); ΔH°2 = -680 kJ
2C(s) + 2H2(g) → C2H4(g); ΔH°3 = 52 kJ
(a) -1165
(b) -2486
(c) +1165
(d) +2486
Answer
Add a comment
Add a comment
Topic Tags
1 Answer
0
28/09/2021 8:25 pm

Correct answer: (b) -2486
Explanation:
ΔH° = 2 × ΔH°1 + 2 × ΔH°2 - ΔH°3
= -2486 kJ
Add a comment
Add a comment
Forum Jump:
Related Topics
-
Consider the ΔG°f and ΔH°f (kJ/mol) for the following oxides. Which oxide can be most easily decomposed to form the metal and oxygen gas?
3 years ago
-
How many molecules of ATP, undergo hydrolysis to raise the temperature of 180 kg of water which was originally at room temperature by 1°C? C{P,m} water = 75.32 J/mol/K, ΔH{P} for ATP hydrolysis = 7 kcal/mol
3 years ago
-
What is the amount of heat (in Joules) absorbed by 18 g of water initially at room temperature heated to 100°C? If 10 g of Cu is added to this water, than decrease in temperature (in Kelvin) of water was found to be?
3 years ago
-
Diborane is a potential rocket fuel which undergoes combustion according to the equation B2H6(g) + 3O2(s) → B2O3(s) + 3H2O(g) Calculate the enthalpy change for the combustion of diborane. Given
3 years ago
-
ΔG in Ag2O → 2Ag + 1/2O2 at a certain temperature is -10 kJ mol^-1. Pick the correct statement
3 years ago
Forum Information
- 321 Forums
- 27.3 K Topics
- 53.8 K Posts
- 1 Online
- 12.4 K Members
Our newest member: Stripchat
Forum Icons:
Forum contains no unread posts
Forum contains unread posts
Topic Icons:
Not Replied
Replied
Active
Hot
Sticky
Unapproved
Solved
Private
Closed