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JEEMAIN and NEET
>>
JEEMAIN PAST PAPERS
>>
2012
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Q)
The standard reduction potentials for
Z
n
2
+
/
Z
n
,
N
i
2
+
/
N
i
and
F
e
2
+
/
F
e
are -0.76, -0.23 and -0.44V respectively. The reaction
X
+
Y
2
→
X
2
+
+
Y
will be spontaneous when :
( A )
X
=
N
i
,
Y
=
F
e
( B )
X
=
F
e
,
Y
=
Z
n
( C )
X
=
Z
n
,
Y
=
N
i
( D )
X
=
N
i
,
Y
=
Z
n
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