calculate the equilibrium constant for N H 3 + H 2 O ⇌ N H 4 + + O H - if, for the equilibrium, N H 4 + + H 2 O ⇌ N H 4 O H + H + the equilibrium constant is 5.5 × 10 – 10

Question

calculate the equilibrium constant for N H 3 + H 2 O ⇌ N H 4 + + O H - if, for the equilibrium, N H 4 + + H 2 O ⇌ N H 4 O H + H + the equilibrium constant is 5.5 × 10 – 10, 1.8 × 10 – 4, 1.8 × 10 – 5, 1.8 × 10 – 6, 1.8 × 10 – 7

MARKS App · Accepted Answer

N H 4 + + H 2 O ⇌ N H 4 O H + H + K eq = NH 4 OH OH − H + H 2 O NH 4 + OH − K e q = K w K b ⇒ 5.5 × 10 - 10 = 10 - 14 K b K b = 10 - 14 5.5 × 10 - 10 = 1.8 × 10 - 5

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