Which of the following will be more soluble at low pH than in pure water? Select...

Question

Question

Which of the following will be more soluble at low pH than in pure water? Select all that apply. Cu(NO2)2 MgSO4 Fe(CIO4)3 AgC

Answer 1

Answer #1

Answer :

Correct option is Cu(NO2 )2

Low pH means acidic conditions - that salt will be more soluble in acidic conditions whose anion is a strong conjugate base of weak acid .

It overall mean is that anion should be made up of weak acid .

In Cu(NO2 )2 , anion is of weak acid HNO2 , so it is soluble at low pH .

MgSO4 soluble in water because anion is of strong acid H2 SO4 .

Fe(ClO4 )2 soluble in water because it's anion is of strong acid HClO4 .

AgCl is insoluble in acidic conditions as well as in normal water ,it is soluble in basic conditions . Since Ag+ is also Lewis acid .

KI soluble in water , because it's anion is of strong acid HI .

Answer 2

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