Bond energy of N-H, H-H and N ≡ N bonds are q1, q2 and q3 . Δ H of: N 2+3 H 2 longrightarrow 2 NH 3 is

Question

Bond energy of N-H, H-H and N ≡ N bonds are q1, q2 and q3 . Δ H of: N 2+3 H 2 longrightarrow 2 NH 3 is (A) q3+3 q2-2 q1 (B) 2 q1-q3-2 q2 (C) q3+3 q2-6 q1 (D) q1+q2-q3

Tardigrade Admin · Accepted Answer

N 2+3 H 2 longrightarrow 2 NH 3 Δ H = q 3+3 q 2-6 q 1

Q. Bond energy of $N - H, H - H$ and $N \equiv N$ bonds are $q_{1}, q_{2}$ and $q_{3} .Δ H$ of : $N_{2} + 3 H_{2} ⟶ 2 N H_{3}$ is

$q_{3} + 3 q_{2} - 2 q_{1}$

$2 q_{1} - q_{3} - 2 q_{2}$

$q_{3} + 3 q_{2} - 6 q_{1}$

$q_{1} + q_{2} - q_{3}$

$N_{2} + 3 H_{2} ⟶ 2 N H_{3}$
$Δ H = q_{3} + 3 q_{2} - 6 q_{1}$

Q. Bond energy of N−H,H−H and N≡N bonds are q1​,q2​ and q3​.ΔH of : N2​+3H2​⟶2NH3​ is

q3​+3q2​−2q1​

2q1​−q3​−2q2​

q3​+3q2​−6q1​

q1​+q2​−q3​