Study of Equilibrium on Solubility: Mg(OH)2(s) Mg2+(aq) + 2 OH–(aq) _____ 9. Upo
ID: 898608 • Letter: S
Question
Study of Equilibrium on Solubility:
Mg(OH)2(s) Mg2+(aq) + 2 OH–(aq)
_____ 9. Upon heating in which direction is the equilibrium shifting? (L) left (R) right
_____ a. Upon heating did the [OH] ions A. Increase B. Decrease
_____ 10. Upon cooling in which direction is the equilibrium shifting? (L) left (R) right
_____ b Upon cooling did the [OH] ions A. Increase B. Decrease
_____ 11. Is the forward reaction A. endothermic B. exothermic
The answers I have are:
9: Right 9a. Decrease 10. Left 10B: Increase 11: Exothermic
Can someone confirm if I am right? If I am wrong please tell me the correct answer!
Explanation / Answer
Mg(OH)2(s) Mg2+(aq) + 2 OH–(aq) This is Exothermic, meaning it releases heat
_____ 9. Upon heating in which direction is the equilibrium shifting? (L) left (R) right; the oslid formation is favoured
_____ a. Upon heating did the [OH] ions A. Increase B. Decrease; since more OH- is producing the solid Mg(OH)2
_____ 10. Upon cooling in which direction is the equilibrium shifting? (L) left (R) right; cooling will favour aqueous solution, so OH and Mg+2 increases (exothermic reaciton)
_____ b Upon cooling did the [OH] ions A. Increase B. Decrease; as stated before, OH- increases since cooling favours ions
_____ 11. Is the forward reaction A. endothermic B. exothermic; it requires heat in order to favour solid formation, so it must be exothermic