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JEE Main Chemistry Class 11 Organic Chemistry Some Basic Principles and Techniques 2 Questions
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© examsnet.com
Question : 2
Total: 100
Following Kjeldahl's method,
1
g
of organic compound released ammonia, that neutralised 10
mL
of
2
M
H
2
SO
4
. The percentage of nitrogen in the compound is_______
%
.
[1-Feb-2024 Shift 2]
Your Answer:
Validate
Solution:
H
2
SO
4
+
2
NH
3
→
(
NH
4
)
2
SO
4
Millimole of
H
2
SO
4
→
10
×
2
So Millimole of
NH
3
=
20
×
2
=
40
Organic
→
NH
3
Compound
40
Millimole
∴
Mole of
N
=
40
1000
wt. of
N
=
40
1000
×
14
%
composition of
N
in organic compound
=
40
×
14
1000
×
1
×
100
=
56
%
© examsnet.com
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