(a) For each of the following reactions, predict the sign of ΔH° and ΔS° and discuss briefly how these factors determine the magnitude of K.
(b) Based on your general chemical knowledge, predict which of these reactions will have K > 0.
(c) In each case indicate whether K should increase or decrease with increasing temperature.

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2 Mg(s) + 02(g) 2 MgO(s) 2 KI(s)2 K(g) 12(g) Na2(g)2 Na(g) 2 V205(s)4 V(s) +5 02(g)