(a) For each of the following reactions, predict the sign

Chapter , Problem 19.99

(choose chapter or problem)

(a) For each of the following reactions, predict the sign of H and S without doing any calculations. (b) Based on your general chemical knowledge, predict which of these reactions will have K 7 1. (c) In each case indicate whether K should increase or decrease with increasing temperature. (i) 2 Mg1s2 + O21g2 2 MgO1s2 (ii) 2 KI1s2 2 K1g2 + I21g2 (iii) Na21g2 2 Na1g2 (iv) 2 V2O51s2 4 V1s2 + 5 O21g2

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