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Byju's Answer
Standard XII
Chemistry
Rate Constant
How many gram...
Question
How many grams of
90
% pure
N
a
2
S
O
3
can be produced from
250
g
of
95
% pure
N
a
C
l
?
A
640.6
g
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B
288.2
g
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C
259.4
g
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D
320.3
g
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Solution
The correct option is
A
640.6
g
Given
90
% pure
N
a
2
S
O
3
is produced from
250
g
95
% pure
N
a
C
l
The reaction involved is
2
N
a
C
l
+
H
2
S
O
3
⟶
2
H
C
l
+
N
a
2
S
O
3
We know actual mass of
N
a
C
l
=
95
% of
250
g
=
95
100
×
250
=
237.5
g
From above reaction , it is clear that
2
moles of
N
a
C
l
⟶
1
mole
N
a
2
S
O
3
i.e.
117
g
N
a
C
l
⟶
126
g
N
a
2
S
O
3
∴
237.5
g
N
a
C
l
⟶
X
g
N
a
2
S
O
3
∴
x
=
237.5
×
126
117
g
=
255.76
g
N
a
2
S
O
3
is produced.
But this
N
a
2
S
O
3
is
100
% pure,
So
90
% pure
N
a
2
S
O
3
produced
=
90
100
×
255.76
g
=
230.184
g
∴
230.184
g
90
%
N
a
2
S
O
3
is produced
Suggest Corrections
0
Similar questions
Q.
How many grams of
N
a
2
S
O
4
can be produced from 260 gm of 90% pure
N
a
C
l
when treated with excess of
H
2
S
O
4
?
Q.
How much
74.1
%
pure
N
a
2
S
O
4
could be produced from
245
g of
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%
pure
N
a
C
l
?
2
N
a
C
l
+
H
2
S
O
4
⟶
N
a
2
S
O
4
+
2
H
C
l
Q.
An isotonic solution will produce an osmotic pressure of
10.00
atm measured against pure water at
37
o
C. How many grams of NaCl must be dissolved in one litre of water to produce an isotonic solution?
Q.
How many grams of
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(
g
)
can be produced by the electrolysis of molten
N
a
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l
with a current of
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A
for
25
min?
Q.
How many grams of
H
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O
can be produced from
5.0
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?
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