Question

The firm of X , Y and Z was dissolved on 31st March , 2019 . Y demands that his loan of ₹ 25 ,000 should be paid before payment of capitals of the partners. But X and Z demand that capital should be paid before the payment of Y's loan . Who is correct ?

Answer 1

Explanation:

search-icon-header

Search for questions & chapters

search-icon-image

user_photo

Class 11

>>Chemistry

>>Organic Chemistry - Some Basic Principles and Techniques

>>Quantitative Analysis

>>A sample of 0.50 g of an or...

Question

Bookmark

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

verified

Verified by Toppr

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%.