The mass of silver(eq.mass=108)displaced by that quantity of current which displaced 5600 ml of hydrogen at STP is?
2 points
A) 5.4g
B)2.7g
C) 54g
D) 27g
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Answered by
1
Answer:
ANSWER
At STP, 1 mole of oxygen occupies 22400 mL.
Hence, the number of moles of oxygen corresponding to 5600 ml is n
O
2
=
22400
5600
=
4
1
=
M
O
2
W
O
2
.
1 mole of oxygen produces 4 moles of lectrons and 1 mole of silver requires 1 mole of electrons.
M
Ag
W
Ag
×1=
M
O
2
W
O
2
×4
M
Ag
W
Ag
×1=
4
1
×4
108
W
Ag
=
4
1
×4
W
Ag
=108g
Thus, the weight of silver displaced by a quantity of electricity which displaces 5600 ml of O
2
at STP will be 108.0 g.
Answered by
1
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