solution is needed

Predict if AS is positive, negative or zero in the following reactions. Explain. (Zero points given if not explained). a) Mg2+ (aq) + 2 OH(aq) Mg(OH)2(s) b) H2O(g) + C(s) + H2(g) + CO(g) - c) H2O(g) + H2O(l) d) NaCl(s) - NaCl(aq)