Write net Bronsted equations and determine the equilibrium constants for the aci

Question

Write net Bronsted equations and determine the equilibrium constants for the acid-base reactions that occur when aqueous solutions of the following are mixed.
1. hydrazoic acid + sodium hypochlorite
2. KHSO4 + NH3
3. H2CO3 + KHS

Explanation / Answer

The net ionic equations for the given reactions are asfollows. a)Molecular equation : HCl (aq) +KCN(aq) --------> HCN(s) + KCl(aq) Netionic eq : H+(aq) + CN-(aq) --------> HCN(s) K = [HCN][KCl] / [HCl][KCN] b) Molecular equation: H2SO4(aq) +Na2CO3(aq) --------> Na2SO4(aq) + H2O(l) +CO2(g) Netionic eq : 2H+(aq) + CO3-2 (aq) --------> H2O(l) + CO2(g) K = [Na2SO4][H2CO3] /[H2SO4][Na2CO3] c) N3H(s) +NaClO(aq) ----------> NaN3(aq) +HClO(aq) Net ionic eq : N3H(s) +ClO-(aq) ---------->N3-(aq) + HClO(s) K = [NaN3][HClO] / [NaClO][N3H] d) KHCO3 + KCN -------->K2CO3(aq) + HCN(s) Net ionic equation : H+(aq) + CN- ------> HCN(s) K = [K2CO3][HCN] / [KCN][KHCO3] e) Net ionis eq : 2H+(aq) + S-2 (aq) ---------> H2S(g) K = [K2CO3][H2S]2 / [H2CO3][KHS]2

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