Question

Consider the following equilibrium at 25°C,
2NO(g) ⇋ N₂(g) + O₂(g) ; K₁ = 4 × 10³⁰ mol litre⁻¹ and
NO(g) + 1/2 Br₂(g) ⇋ NOBr(g) ; K₂ = 1.4 mol⁻¹/² litre¹/²
The value of K꜀ for the reaction (at the same temperature)
1/2 N₂(g) + 1/2 O₂(g) + 1/2 Br₂(g) ⇋ NOBr(g) is
(a) 3.5 × 10⁻³¹ (b) 2.8 × 10¹⁵
(c) 7.0 × 10⁻¹⁶ (d) 5.6 × 10³⁰

Answer 1

Answer:

Consider the following equilibrium at 25°C,

2NO(g) ⇋ N₂(g) + O₂(g) ; K₁ = 4 × 10³⁰ mol litre⁻¹ and

NO(g) + 1/2 Br₂(g) ⇋ NOBr(g) ; K₂ = 1.4 mol⁻¹/² litre¹/²

The value of K꜀ for the reaction (at the same temperature)

1/2 N₂(g) + 1/2 O₂(g) + 1/2 Br₂(g) ⇋ NOBr(g) is

(a) 3.5 × 10⁻³¹ (b) 2.8 × 10¹⁵

(c) 7.0 × 10⁻¹⁶ (d) 5.6 × 10³⁰

Answer 2

option c is the correct answer

(c) 7.0 × 10⁻¹⁶