wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The standard heats of formation of CCl4 (g), H2O (g), CO2 (g) and HCl (g) at 298K are25.5,57.8,94.1 and22.1 kcal mol1 respectively. ΔH0 (298K) for the reaction CCl4 (g)+2H2O (g)CO2 (g)+4HCl (g)

A
+82.8 kcal mol1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
82.8 kcal mol1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
+41.4 kcal mol1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
41.4 kcal mol1
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D 41.4 kcal mol1
We are given the standard heat of formation of reactant and products.
we know that,
ΔH0r=ΔfH0 (products)ΔfH0 (reactants)

putting all the values,
=94.1+4(22.1)(25.52×57.8) kcal mol1 =41.4 kcal mol1

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon