Question

From the following reactions, determine the reactions that are exothermic.
(1) F(g)+ė + F"(8)
(ii) CaCl,(s) + Ca(s)+C1,(8)
(iii) NaCl(s) → Na* (8)+C1 (8)
(iv) K(8)+ė →K (8)
(A) (i) and (iv) are exothermic
(B) (ii) and (iii) are exothermic
(C) All the reactions are exothermic
(D) (i), (ii), and (iii) are exothermic​

Answer 1

(ii) and (iii) are exothermic reactions