Question
Asked By ObsidianSkies99 at
Answered By Expert
Arthur
Expert · 4.8k answers · 4k people helped
Solution By Steps
Step 1: Identify Solubility Rules
Most ammonium (NH₄⁺) salts, and salts of alkali metals (Li⁺, Na⁺, K⁺) are soluble in water. Calcium phosphate is generally insoluble except in the presence of certain ions which are not relevant here.
Step 2: Apply Rules to Options
- (NH₄)₃PO₄, Li₃PO₄, Na₃PO₄, and K₃PO₄ are soluble due to the presence of ammonium or alkali metal ions.
- Ca₃(PO₄)₂ is insoluble due to the general rule that calcium phosphate is insoluble in water.
Final Answer
E) Ca₃(PO₄)₂ is insoluble in water.
Key Concept
Solubility Rules
Key Concept Explanation
Solubility rules help predict the solubility of compounds in water. They state that most salts containing ammonium and alkali metal cations are soluble, while certain salts like calcium phosphate are typically insoluble.
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