Which of the following has max. solubility at low pH? - Vidyadip

MCQ

Which of the following has max. solubility at low $pH$?

A
$NH _{4} Cl$
B
$NaCl$
C
$Na _{3} PO _{4}$
✓
$\operatorname{Sr}( OH )_{2}$

✓

Answer

Correct option: D.

$\operatorname{Sr}( OH )_{2}$

d
The compound, $Sr $$( OH )_{2}$, has max. solubilityin acidic solution that is at low $pH$ as shown below.

$Sr ( OH )_{2} \rightarrow Sr ^{+}+2 OH ^{-}$

It gives high amount of hydroxide ions which are neutralized by the high amount of $H ^{+}$ ions.

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