from the rate expression for the following reaction determine their order of reaction and the dimensic of the rate constant
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Answer:
(i) 3NO(g)→N
2
O(g)Rate=k[NO]
2
Order w.r.t NO is 2 and overall order is 2.
Dimensions of the rate constant
s
molL
−1
=k(molL
−1
)
2
k=mol
−1
L
1
s
−1
(ii) H
2
O
2
(aq)+3I
−
(aq)+2H
+
→2H2O(I)+I
3
−
Rate=k[H
2
O
2
][I
−
]
Order w.r.t H
2
O
2
is 1, order w.r.t I
−
is 1 and overall order is 2.
Dimensions of the rate constant
s
molL
−1
=k(molL
−1
)
2
k=mol
−1
L
1
s
−1
(iii) CH
3
CHO(g)→CH
4
(g)+CO(g)Rate=k[CH
3
CHO]
3/2
Order w.r.t CH
3
CHO is 3/2 and overall order is 3/2.
Dimensions of the rate constant
s
molL
−1
=k(molL
−1
)
3/2
k=mol
−1/2
L
1/2
s
−1
(iv) C
2
H
5
Cl(g)→C
2
H
4
(g)+HCl(g)Rate=k[C
2
H
5
Cl]
Order w.r.t C
2
H
5
Cl is 1, and overall order is 1.
Dimensions of the rate constant
s
molL
−1
=k(molL
−1
)
1
k=s
−1
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