Can two precipitates form in a precipitation reaction that starts with only two compounds in water? [closed]








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Can two precipitates form in a precipitation reaction that starts with only two compounds in water?




The number of examples is considerably great.
Consider the following:


$$\ce{Ba(OH)2(aq) + MgSO4(aq) -> BaSO4(s) + Mg(OH)2(s)} $$


Above reactants are reasonably soluble in water.
From Wikipedia, $\ce{Ba(OH)2} $ has a solubility of 1.67 g / 100 mL at 20 °C and $\ce{MgSO4} $ a solubility of 25.5 g / 100 mL at 20 °C


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Yes is the answer to your question provided that reactant two molecules are salts.Two salts can react with eact other and form two new stable salts depending on their $\mathrm{K}\_{sp}$ values.


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