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TS EAMCET 18-July-2022 Shift 2 Solved Paper
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© examsnet.com
Question : 144
Total: 160
On passing a current of
1.2
A through a solution of salt of copper for
40
m
i
n
,
0.96
g
of copper was deposited. The equivalent weight of copper in
g
is
21.2
31.75
63.5
15.9
Validate
Solution:
Current
=
1.2
A
Time
=
40
minutes
=
2400
s
Mass of copper deposited
=
0.96
g
Coulombs of charge
=
charge
×
time
=
1.2
×
2400
=
2880
C
Moles of electrons in
2880
C
=
2880
96500
=
0.02984
=
2.98
×
10
−
2
Equivalent weight of
Cu
=
Mass of
Cu
deposited
Moles of electrons
=
0.96
2.98
×
10
−
2
=
31.75
© examsnet.com
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