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Byju's Answer
Standard IX
Chemistry
Ellingham Diagram
how can we ca...
Question
how can we calculate percentage purity in redox reactions??
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Solution
%impurity = Pure×100/impure
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Similar questions
Q.
Calculate the percentage of pure aluminium in 10 kg of aluminium oxide
[
A
l
2
O
3
]
of 90 % purity.
[Al=27, O=16]
Q.
Calculate the amount of
C
a
C
O
3
in grams having percentage purity
25
%
that produces
0.56
litre of
C
O
2
at STP on heating?
Q.
Chalk is almost pure calcium carbonate. We can work out its purity by measuring how much carbon dioxide is given off when it reacts with
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C
l
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15
g
of chalk was reacted with an excess of dilute hydrochloric acid. 2.24 liters of carbon dioxide gas was collected at standard temperature and pressure (STP).
The equation for the reaction is :
C
a
C
O
3
(
s
)
+
2
H
C
l
(
a
q
)
→
C
a
C
l
2
(
a
q
)
+
H
2
O
(
l
)
+
C
O
2
(
g
)
Calculate the percentage purity.
(Assume that impurity present does not produce
C
O
2
)
Q.
150
m
L
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N
/
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H
C
l
is required to react completely with
1.0
g
of a sample of limestone. Calculate the percentage purity of calcium carbonate.
Q.
How much amount of
C
a
C
O
3
in gram having percentage purity 50 per cent produces 0.56 litre of
C
O
2
at on heating?
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