For per gram of reactant, the maximum quantity of N2 gas is produced in which of the following thermal decomposition reactions ? (Given: Atomic wt. - Cr=52 u, Ba=137 u)

Question

For per gram of reactant, the maximum quantity of N2 gas is produced in which of the following thermal decomposition reactions ? (Given: Atomic wt. - Cr=52 u, Ba=137 u) (A) ( NH 4)2 Cr 2 O 7( s ) arrow N 2( g )+4 H 2 O ( g )+ Cr 2 O 3( s ) (B) 2 NH 4 NO 3( s ) arrow 2 N 2( g )+4 H 2 O ( g )+ O 2( g ) (C) Ba ( N 3)2( s ) arrow Ba ( s )+3 N 2( g ) (D) 2 NH 3( g ) arrow N 2( g )+3 H 2( g )

Tardigrade Admin · Accepted Answer

Option (1): Molar mass of ( NH 4 text ) Cr 2 O 7=252 g mol -1 1 mol of ( NH 4)2 Cr 2 O 7 will give 1 mol of N 2 (1/252) mol of ( NH 4)2 Cr 2 O 7 will give (1/252) × 1=0.039 mol of N 2 Option (2): Molar mass of NH 4 NO 3=80 g mol -1 1 mol of NH 4 NO 3 will give 1 mol of N 2 (1/80) mol of NH 4 NO 3 will give (1/80) × 1=0.0125 mol of N 2 Option (3): Molar mass of Ba ( N 3)2=221 g mol -1 1 mol of Ba ( N 3)2 will give 3 mol of N2 (1/221) mol of Ba ( N 3)2 will give (1/221) × 3=0.014 mol of N 2 Option (4): Molar mass of NH 3=17 g mol -3 2 mol of NH 3 will give 1 mol of N 2 (1/17) mol of NH 3 will give (1/2 × 17)=0.0297 mol of N 2

Q. For per gram of reactant, the maximum quantity of $N_{2}$ gas is produced in which of the following thermal decomposition reactions ?
(Given : Atomic wt. - $C r = 52 u, B a = 137 u$ )

$(N H_{4})_{2} C r_{2} O_{7} (s) \to N_{2} (g) + 4 H_{2} O (g) + C r_{2} O_{3} (s)$

$2 N H_{4} N O_{3} (s) \to 2 N_{2} (g) + 4 H_{2} O (g) + O_{2} (g)$

$B a (N_{3})_{2} (s) \to B a (s) + 3 N_{2} (g)$

$2 N H_{3} (g) \to N_{2} (g) + 3 H_{2} (g)$

Q. For per gram of reactant, the maximum quantity of N2​ gas is produced in which of the following thermal decomposition reactions ? (Given : Atomic wt. - Cr=52u,Ba=137u)

(NH4​)2​Cr2​O7​(s)→N2​(g)+4H2​O(g)+Cr2​O3​(s)

2NH4​NO3​(s)→2N2​(g)+4H2​O(g)+O2​(g)

Ba(N3​)2​(s)→Ba(s)+3N2​(g)

2NH3​(g)→N2​(g)+3H2​(g)

Q. For per gram of reactant, the maximum quantity of $N_{2}$ gas is produced in which of the following thermal decomposition reactions ?
(Given : Atomic wt. - $C r = 52 u, B a = 137 u$ )

$(N H_{4})_{2} C r_{2} O_{7} (s) \to N_{2} (g) + 4 H_{2} O (g) + C r_{2} O_{3} (s)$

$2 N H_{4} N O_{3} (s) \to 2 N_{2} (g) + 4 H_{2} O (g) + O_{2} (g)$

$B a (N_{3})_{2} (s) \to B a (s) + 3 N_{2} (g)$

$2 N H_{3} (g) \to N_{2} (g) + 3 H_{2} (g)$