Question
Write solubility product of following sparingly soluble salt.$BaSO_4$
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Answer
$BaSO _{4( s )} \rightleftharpoons Ba _{( aq )}^{2+}+ SO _{4( aq )}^{2-}$
$\therefore K _{ sp }=\left[ Ba ^{2+}\right]\left[ SO _4^{2-}\right]$
$\therefore K _{ sp }=\left[ Ba ^{2+}\right]\left[ SO _4^{2-}\right]$
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