Given concentration equilibrium constants (1) h3o +(aq) + noâ 2 (aq) ââ½ hno2(aq) + h2o, kc = 3.86 Ã 103 , (2) 2 h2o(â) ââ½ h3o +(aq) + ohâ(aq), kw = 1.0 Ã 10â14 , calculate kc for the reaction noâ 2 (aq) + h2o(â) ââ½ hno2(aq) + ohâ(aq).