Notifications
Clear all
0
25/09/2021 5:24 pm
Topic starter
For which one of the processes represented by the following equations the enthalpy (heat) change is likely to be negative
(a) Cl-(g) + aq → Cl-(aq)
(b) Cl(g) → Cl+(g) + e-
(c) 1/2Cl2(g) → Cl(g)
(d) Cl2(l) → Cl2(g)
1 Answer
0
25/09/2021 5:26 pm
Correct answer: (a) Cl-(g) + aq → Cl-(aq)
Explanation:
Gaseous ions, when dissolved in water, get hydrated and heat is evolved (heat of hydration).
Cl-(g) + aq → Cl-(aq) is such reaction.