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Byju's Answer
Standard XII
Chemistry
Axial and Equatorial Hydrogens
15. How to ca...
Question
15. How to calculate nfactor when water is reduced or oxadised? Using change in oxadation no.
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Q.
The factor not needed to calculate heat lost or gained when there is no change of state is:
Q.
Consider the reaction of water with
F
2
and suggest in terms of oxidation and reduction which species are oxidised/reduced.
Q.
M
n
2
+
is identified by its oxidation to a salt giving pink colour in solution.
Which of the following is correct?
(a) The pink colour is due to the formation of
M
n
O
−
4
.
(b) Oxidising agent used is
B
r
2
water or
P
b
O
2
/
H
+
.
(c) Oxidised
M
n
2
+
changes to
K
2
M
n
O
4
(green) by KOH
Q.
If 10 g of
V
2
O
5
is dissolved in acid and is reduced to
V
2
+
by zinc metal, how many moles
I
2
could be reduced by the resulting solution if it is further oxidised to
V
O
2
+
ions?
[Assume no change in state of
Z
n
2
+
ions]
(
V
=
51
,
O
=
16
,
I
=
127
)
Q.
Why is
H
C
l
not used to make the medium acidic in oxidation reactions of
K
M
n
O
4
in acidic medium?
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