class 11 chemistry
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Answer:
S
+
O
2
→
S
O
2
Δ
H
=
−
298.2
k
J
/
m
o
l
e
S
O
2
+
1
2
O
2
→
S
O
3
Δ
H
=
−
98.7
k
J
/
m
o
l
e
S
O
3
+
H
2
O
→
H
2
S
O
4
Δ
H
=
−
130.2
k
J
/
m
o
l
e
H
2
+
1
2
O
2
→
H
2
O
Δ
H
=
−
287.3
k
J
/
m
o
l
e
The formation of
H
2
S
O
4
H
2
+
S
+
2
O
2
→
H
2
S
O
4
can be calculated by adding the above four equations
Δ
H
=
−
(
298.2
+
98.7
+
130.2
+
287.3
)
=
−
814.4
k
J
/
m
o
l
e