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Consider the aqueous solution formed when each of the ionic solids below are dissolved in water....

Consider the aqueous solution formed when each of the ionic solids below are dissolved in water. Indicate if the solution will be acidic, basic or neutral. If you indicated that the solution is either acidic or basic, give the pertinent reaction that generates either hydrogen ions H+ or hydroxide ions OH− that involves the appropriate ion. For: MgCl2, KCH3 COO(s), Mg(CN)2(s), NH4 I and LiBr(s)

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Answer #1

strong acid + strong base = neutral salt

strong acid + weak base = acidic salt

weak acid + strong base = basic salt

weak acid + weak base = neutral salt

1) MgCl2 is neutral

MgCl2 + 2H2O -------------> Mg(OH)2 + 2 HCl

2) CH3COOK is basic

CH3COOK + H2O ------------> KOH + CH3COOH

3) Mg(CN)2 is basic

Mg(CN)2 + 2H2O -----------> Mg(OH)2 + 2 HCN

4) NH4 I is acidic

NH4I + H2O ----------> NH4OH + HI

5) LiBr is neutral

LiBr + H2O ----------> LiOH + HBr

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