Ammonium carbonate when heated to 200°C gives a mixture of NH3 and CO2 vapour with a density of 13.0. What is the degree of dissociation of ammonium carbonate?

Question

Ammonium carbonate when heated to 200°C gives a mixture of NH3 and CO2 vapour with a density of 13.0. What is the degree of dissociation of ammonium carbonate? (A) 3/2 (B) 1/2 (C) 2 (D) 1

Tardigrade Admin · Accepted Answer

NH2COONH4 leftharpoons 2NH3 + CO2 α (D-d/(n-1)d) where D is the density (initial) D= (mol.wt/2) = (78/2) =39 n = no. of product = 3 d = final density α = (39-13/(3-1)13)=1 ,so α =1

Q. Ammonium carbonate when heated to $200° C$ gives a mixture of $N H_{3}$ and $C O_{2}$ vapour with a density of $13.0.$ What is the degree of dissociation of ammonium carbonate?

$3/2$

$1/2$

$2$

$1$

$N H_{2} COON H_{4} ⇌ 2 N H_{3} + C O_{2}$
$α \frac{D - d}{( n - 1 ) d}$ where D is the density (initial)
$D = \frac{m o l . wt}{2} = \frac{78}{2} = 39$
$n = n o$ . of product $= 3 d =$ final density
$α = \frac{39 - 13}{( 3 - 1 ) 13} = 1,$ so $α = 1$

Q. Ammonium carbonate when heated to 200°C gives a mixture of NH3​ and CO2​ vapour with a density of 13.0. What is the degree of dissociation of ammonium carbonate?

3/2

1/2

2

1

NH2​COONH4​⇌2NH3​+CO2​ α(n−1)dD−d​ where D is the density (initial) D=2mol.wt​=278​=39 n=no. of product =3d= final density α=(3−1)1339−13​=1,so α=1

Q. Ammonium carbonate when heated to $200° C$ gives a mixture of $N H_{3}$ and $C O_{2}$ vapour with a density of $13.0.$ What is the degree of dissociation of ammonium carbonate?

$3/2$

$1/2$

$2$

$1$

$N H_{2} COON H_{4} ⇌ 2 N H_{3} + C O_{2}$
$α \frac{D - d}{( n - 1 ) d}$ where D is the density (initial)
$D = \frac{m o l . wt}{2} = \frac{78}{2} = 39$
$n = n o$ . of product $= 3 d =$ final density
$α = \frac{39 - 13}{( 3 - 1 ) 13} = 1,$ so $α = 1$