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Byju's Answer
Standard XII
Chemistry
Alcohols as Nucleophiles and Electrophiles
If the heat o...
Question
If the heat of formation of NO 2 is 'x' [1/2N 2(g) +O 2(g) →NO 2(g) ] the heat of reaction N 2(g) +O 2(g) →2NO (g) is y and the heat of reaction 2NO (g) +O 2(g) →2NO 2 (g) is z, then:
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Similar questions
Q.
Given 2NO
(
g
)
+ O
2
(
g
)
→
2NO
2
(
g
)
; rate = k
[
N
O
]
2
[
O
2
]
1
. By how many times does the rate of the reaction change when the volume of the reaction vessel is reduced to 1/3
r
d
of its original volume? Will there be any change in the order of the reaction?
Q.
O
(
g
)
+
e
−
→
O
−
(
g
)
Δ
H
1
O
−
(
g
)
+
e
−
→
O
−
2
(
g
)
Δ
H
2
O
2
(
g
)
→
O
+
2
(
g
)
+
e
−
Δ
H
3
O
(
g
)
→
O
+
(
g
)
+
e
−
Δ
H
4
H
2
(
g
)
→
H
+
2
(
g
)
+
e
−
Δ
H
5
H
(
g
)
→
H
+
(
g
)
+
e
−
Δ
H
6
O
(
g
)
+
2
e
−
→
O
−
2
Δ
H
7
Which of the following option(s) is/are correct?
Q.
For the first order decomposition reaction of
N
2
O
5
, it is observed that
(
i
)
N
2
O
5
(
g
)
→
2
N
O
2
(
g
)
+
1
2
O
2
(
g
)
;
−
d
[
N
2
O
5
]
d
t
=
k
[
N
2
O
5
]
(
i
i
)
2
N
2
O
5
(
g
)
→
4
N
O
2
(
g
)
+
O
2
(
g
)
;
−
d
[
N
2
O
5
]
d
t
=
k
′
[
N
2
O
5
]
Which of the following is true?
Q.
The number of equations corresponds to the heat of formation at 298K
H
2
(
g
)
+
B
r
2
(
l
)
→
2
H
B
r
(
g
)
C
(
d
i
a
m
o
n
d
)
+
2
H
2
(
g
)
→
C
H
4
(
g
)
C
(
g
r
a
p
h
i
t
e
,
s
)
+
2
H
2
(
g
)
+
1
2
O
2
(
l
)
→
C
H
3
O
H
(
l
)
H
2
(
g
)
+
1
2
O
2
(
g
)
→
H
2
O
(
l
)
C
(
g
r
a
p
h
i
t
e
,
s
)
+
3
H
2
(
g
)
+
1
2
O
2
(
l
)
→
C
2
H
5
O
H
(
l
)
1
2
N
2
(
g
)
+
3
2
H
2
(
g
)
→
N
H
3
(
g
)
C
(
g
r
a
p
h
i
t
e
.
s
)
+
O
2
(
g
)
→
C
O
2
(
g
)
C
(
d
i
a
m
o
n
d
)
+
1
2
O
2
(
g
)
→
C
O
(
g
)
___
Q.
If the heat of formation of
N
o
2
is
[
1
2
N
2
(
g
)
+
O
2
(
g
)
→
N
O
2
(
g
)
]
the heat of reaction
N
2
(
g
)
+
O
2
(
g
)
→
2
N
O
(
g
)
is
y
and the heat of reaction
2
N
O
(
g
)
+
O
2
(
g
)
→
2
N
O
2
(
g
)
is
z
, then:
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