Home
Class 11
CHEMISTRY
0.35 g of an organic susbtance was Kjeld...

0.35 g of an organic susbtance was Kjeldahilsed and the ammonia obtained was passed into 100ml of M/`10H_(2)SO_(4)` The excess acid required 154 ml of `M//10 NaOH` for neurtralisation, calculate the % of nitrogen in the compound.

Text Solution

Verified by Experts

The correct Answer is:
`18.4 %`
Volume of unused acid.
`ubrace(N_(1)V_(1))_("Acid") equiv ubrace(N_(2)V_(2))_("Base")`
`1/5xxV=1/10xx154` or `V=77 cm^(3)`.
Step II. Percentage of nitrogen.
Volume of acid used `=100-77=23 cm^(3)`
Percentage of `N=(1.4xx"Normality of acid used"xx"Volume of acid used")/("Mass of compound")=(1.4xx0.2xx23)/035=18.4 %`
Promotional Banner

Similar Questions

Explore conceptually related problems

0.70 g of an organic compound was kjeldahlised and the ammonia obtained was passed into 150 ml of (M/5) H_2SO_4 . The excess acid required 100 ml of (M/5) NaOH for neutralisation, the percentage of nitrogen on the organic compound is

0.303 g of an organic compound was analysed for nitrogen by Kjeldahl's method. The ammonia evolved was absorbed in 50 ml of 0.1 N H_2 SO_4 . The excess acid required 25 ml of 0.1 N NaOH for neutralisation. Calculate the percentage of nitrogen in the compound.

0.45 gm of an organic compound gave on combution 0.792 gm of CO_2 and 0.324gm of water. 0.24 gm of the same substance was Kjeldahlised and the ammonia liberated was absorbed in 50.0 ml of (M)/(8H_2SO_4) . The excess acid required 77.0 ml of (N)/(10)NaOH for complete neutralisation. Calculate the empirical formula of the compound.

0.255 of an organic nitrogenous compound was Kjeldahlised and the ammonia evolved was absorbed in 50cm^(3) of (N)/(10) H_(2)SO_(4) . The excess acid required 10cm^(3) of (N)/(5) NaOH. Calculate the percentage of nitrogen in the given compound

0.50 gm of an organic compound was treated according to Kjeldahl's meghod. The ammonia evolved was absorbed in 50 ml of 0.5 MH_2SO_4 . The residual acid required 60 ml of (M)/(2)NaOH solution. Find the percentage of nitrogen in the compound.

An organic compound contains 69.4% carbon and 5.8% hydrogen. A sample of 0.303 g of this compound was analysed for nitrogen by Kjeldahl's method. The ammonia evolved was absorbed in 50 mL of 0.05 M H_2 SO_4 . The excess acid required 25 mL of 0.1 M NaOH for neutralisation. Determine the molecular formula of the compound, if its molecular mass is 121.

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 residual acid required 60 mL of 0.5 M solution of NaOH for neutralisation. What would be the percentage composition of nitrogen in the compound?

29.5 mg of an organic compound containing nitrogen was digested according to Kjeldahl's method and the evolved ammonia was absorbed in 20mL of 0.1M HCL solution. The excess of the acid required 15 mL of 0.1 M NaOH solution for complete neutralization. The percentage of nitrogen in the compound is:

29.5 mg of an organic compound containing nitrogen was digested according to Kjeldahl's method and the evolved ammonia was absorbed in 20 mL of 0.1 M HCl solution. The excess of the acid required 15 mL of 0.1 M NaOH solution for complete neutralization. The percentage of nitrogen in the compounds is

For the estimation of nitrogen, 1.4 g of an organic compound was digested by Kjeldahl's method and the evolved ammonia was absorbed in 60 mL of M//10 sulphuric acid. The unreacted acid required 20 mL of M//10 sodium hydroxide for complete neutralisation. The percentage of nitrogen in the compound is