MCQ
Which of the following has max. solubility at low $pH$?
- A$NH _{4} Cl$
- B$NaCl$
- C$Na _{3} PO _{4}$
- ✓$\operatorname{Sr}( OH )_{2}$
$Sr ( OH )_{2} \rightarrow Sr ^{+}+2 OH ^{-}$
It gives high amount of hydroxide ions which are neutralized by the high amount of $H ^{+}$ ions.
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$(I)$ ${O_3} \to $ product
$(II)$ $C{r_2}O_7^{2 - }\xrightarrow{{{H^ + }}}$ product
$(III)$ $MnO_4^\Theta \xrightarrow{{{H^ + }}}$ product
$(IV)$ $H_2S \longrightarrow $ product