When 1 g of compound (X) is subjected to Kjeldahl's method for estimation of nitrogen, 15 mL 1 M was neutralized by ammonia evolved. The percentage of nitrogen in compound (

Question

When 1 g of compound (X) is subjected to Kjeldahl's method for estimation of nitrogen, 15 mL 1 M $H_{2} {SO}_{4}$ was neutralized by ammonia evolved. The percentage of nitrogen in compound (X) is : [2026]

Smart Achievers · Accepted Answer

(2)

$eq. of H_{2} {SO}_{4} = eq. of Ammonia$

$\Rightarrow \frac{15 \times 1 \times 2}{1000} = moles of ammonia \times 1$

$\Rightarrow Moles of ammonia = moles of 'N'$

$\Rightarrow Weight of nitrogen = \frac{15 \times 1 \times 2}{1000} \times 14 = 0.42$

$% weight of 'N' = \frac{0.42}{1} \times 100 = 42 %$

Solution

Q.
When 1 g of compound (X) is subjected to Kjeldahl's method for estimation of nitrogen, 15 mL 1 M $H_{2} {SO}_{4}$ was neutralized by ammonia evolved. The percentage of nitrogen in compound (X) is : [2026]

1 0.42

2 42

3 0.21

4 21

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