Question

Which of the following will be more soluble in an acidic solution than in pure water?...

Which of the following will be more soluble in an acidic solution than in pure water? (it can be any of the 5)

a. Zn(OH)2

b.SrSo4

c.PbBr4

d. CsClO4

e. AlPO4

Homework Answers

Answer #1

A) will form basic solution (OH- ions increase pH)

B) SO4-2 will form very slighlty HSO4- but the pH change will be so little, don0t choose it, evne though that by definition you will have a little bit basic pH

C) 4Br- ions will not form HBr since this is a strong acid. Pb+2 will react with OH- ions of the solution to form Pb(OH)2(s) therefore, ions of OH- decrease, H+ ions are high, pH is acidic

D) Will not form equilibria... pH will remain near 7

e) AlPO4 ----> Al+3 and PO4-... This one is tricky

Al+3 will form Al(OH) increasing H+ ions, but PO4- will steal those H+3 ions, and actually is stornger so pH will be slightly basic

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