emelynpacheco20 emelynpacheco20 23-10-2022 Chemistry Answered Without doing any calculations, predict the sign of ∆H for each of the following reactions: (a) NaCl1s2 -->Na + 1g2 + Cl-1g2 (b) 2 H1g2 -> H21g2 (c) Na1g2 -> Na + 1g2 + e- (d) I21s2 -> I21l2