o AT&T; 4:44 PM 33% Study of Equilibrium on Solubility: Mg(OH)2(s)Mg2+(aq) +2 OH

Question

o AT&T; 4:44 PM 33% Study of Equilibrium on Solubility: Mg(OH)2(s)Mg2+(aq) +2 OH-(aq) equilibrium shifting? (L) left (R) right B. Decrease equilibrium shifting? (L) left (R) right B. Decrease exothermic 9. Upon heating in which direction is the a. Upon heating did the [OH] ions A. Increase 10. Upon cooling in which direction is the b Upon cooling did the [OH] ions A. Increase 11. Is the forward reaction A. endothermic B. The answers I have are: 9: Right 9a. Decrease 10. Left 10B Increase Can someone confirm if I am right? If I am wrong please tell me the correct answer! 11: Exothermic

Explanation / Answer

Q8

Mg(OH)2(s) dissolution is endothermic, i.e. it requires heat in order to form ionic secies

therefore, addition of heat will faovur RIGHT side, i.e. ions species

Q9

adding OH- will increas [OH-]

Q10

cooling will make the reaction go towards the LEFT side

therefore, OH ions muis decrease

Q11

the forward reaciton must be endothermic

NOTE:

if heating favours right side ( as you stated in 9) then it must be absorbing heat in order to form products, therefore exothermic ( your answer in 11 is incorrect)

also, ions of OH- increases when heated,

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