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Byju's Answer
Standard XII
Chemistry
Thermodynamic Processes
The heat of f...
Question
The heat of formation
(
Δ
H
f
)
of
H
2
O
(
g
)
is
-243 kJ.
Δ
E
of it at temperature T is:
A
-243 + RT
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B
-243 - RT
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C
-243 + 1/2 RT
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D
-243 - 1/2 RT
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Solution
The correct option is
C
-243 + 1/2 RT
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Similar questions
Q.
Heat of formation of
H
2
O
(g) at
25
0
C
is -243 KJ.
Δ
U
for the reaction
H
2
(
g
)
+
1
2
O
2
(
g
)
→
H
2
O
(
g
)
at
25
0
C
is:
Q.
Simplify the expression
(
243
0.12
×
243
0.08
)
2
Q.
Simplify:
1
2
√
243
−
√
27
4
Q.
Evaluate:
3
3
×
(
243
)
−
2
3
×
9
−
1
3
Q.
Evaluate:-
3
3
×
(
243
)
−
2
3
×
9
−
1
3
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