All the partners wish to dissolve the firm . Yasin , a partner wants that her loan of ₹ 5,00,000 be paid before payment of capitals to the partners . But Amar , another partner wants that the capitals be paid before the payment of Yasin's loan . You are required to settle the conflict giving reasons.
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Class 11
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>>Organic Chemistry - Some Basic Principles and Techniques
>>Quantitative Analysis
>>A sample of 0.50 g of an or...
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A sample of 0.50 g of an organic compound was treated according to Kjeldahl's method. The ammonia evolved was absorbed in 50 mL of 0.5 M H
2
SO
4
.The residue acid required 60 mL of 0.5 M solution of NaOH for neutralisation. What would be the percentage composition of nitrogen in the compound?
Hard
Solution
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Correct option is
C
56
Mass of organic compound = 0.50 g
60 mL of 0.5 M solution of NaOH is required by residual acid for neutralisation
⇒ 60 mL of 0.5 M solution of NaOH =
2
60
mL of 0.5M H
2
SO
4
= 30mL of 0.5M H
2
SO
4
∴ Acid consumed in absorption of evolved ammonia is (50-30)mL = 20mL
Again, 20mL of 0.5M H
2
SO
4
= 40mL of 0.5M NH
3
Since 1000mL of 1M NH
3
contains 14g of nitrogen,
∴ 40mL of 0.5M NH
3
will contain =
1000
14×40
×0.5 = 0.28g of N
Therefore, percentage of N in 0.50g of organic compound =
0.50
0.28
×100=56%
Hence, the correct answer is 56%.