Problem: When reaction 1 and 2 below are added together, the result is reaction 3.       1)  H 2O (l) + HNO 2 (aq) ⇌ H 3O+ (aq) + NO 2‒ (aq)              K 1 = 4.50 × 10 ‒4       2)  H 3O + (aq) + OH ‒ (aq) ⇌ 2 H 2O (l)                                   K 2 = 1.00 × 10 14       3)  HNO 2 (aq) + OH ‒ (aq) ⇌ NO 2‒ (aq) + H 2O (l)                K 3=? Find the equilibrium constant, K 3.              A) 4.50 × 10‒18              B) 2.22 × 1017              C) 4.50 × 1010                 D) 1.00 × 1014

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When reaction 1 and 2 below are added together, the result is reaction 3.

      1)  H 2O (l) + HNO (aq) ⇌ H 3O+ (aq) + NO 2‒ (aq)              1 = 4.50 × 10 ‒4

      2)  H 3(aq) + OH ‒ (aq) ⇌ 2 H 2O (l)                                   2 = 1.00 × 10 14

      3)  HNO (aq) + OH ‒ (aq) ⇌ NO 2‒ (aq) + H 2O (l)                3=?

Find the equilibrium constant, 3.           

A) 4.50 × 10‒18              B) 2.22 × 1017              C) 4.50 × 1010                 D) 1.00 × 1014

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