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Write the expression for Kc for the following reactions. In each case indicate whether the reaction is homogenous or heterogeneous.

a) 3NO(g) ?? N2O(g) + NO(g)

b) CH4(g) + 2H2S(g) ?? CS2(g) + 4H2(g)

c) HF(g)+H2O (l) ?? H+(aq) + F-(aq)

d) Ti(s) + 2Cl2(g) ?? TiCl4(l)

e) 2Ag(s)+Zn2+(aq) ?? 2Ag+(aq) + Zn (s)

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