Tardigrade
Tardigrade - CET NEET JEE Exam App
Exams
Login
Signup
Tardigrade
Question
Chemistry
One mole of methanol, when burnt in oxygen, gives out 723 kJ mol- 1 heat. If one mole of oxygen is used, what will be the amount of heat evolved?
Q. One mole of methanol, when burnt in oxygen, gives out 723 kJ
m
o
l
−
1
heat. If one mole of oxygen is used, what will be the amount of heat evolved?
1162
145
NTA Abhyas
NTA Abhyas 2022
Report Error
A
723 kJ
B
964 kJ
C
482 kJ
D
241 kJ
Solution:
2
m
o
l
2
C
H
3
O
H
+
3
m
o
l
3
O
2
→
2
C
O
2
+
4
H
2
O
Δ
H
=
−
723
k
J
/
m
o
l
1 mol
O
2
≡
3
2
m
o
lC
H
3
O
H
1 mol
C
H
3
O
H
on combustion gives out 723 kJ heat
So
3
2
m
o
lC
H
3
O
H
combustion gives out
=
723
×
3
2
kJ heat
=
482
kJ heat.