The solubility of four common compounds is given in the table. compound solubility in water sodium sulfate soluble silver chloride insoluble potassium nitra...
Question 1 Report
The solubility of four common compounds is given in the table.
| compound | solubility in water |
|---|---|
| sodium sulfate | soluble |
| silver chloride | insoluble |
| potassium nitrate | soluble |
| ammonium chloride | soluble |
Answer Details
The table is the only evidence needed: silver chloride is the single entry marked insoluble. That fits the general solubility rules for chlorides, which are soluble except for silver chloride and lead(II) chloride. Silver chloride appears as a white precipitate the instant silver nitrate solution meets a chloride solution:
Ag+(aq) + Cl−(aq) → AgCl(s)
which is the standard test for chloride ions. Sodium sulfate, potassium nitrate and ammonium chloride are all soluble, following a rule worth memorising: every sodium, potassium and ammonium salt, and every nitrate, dissolves in water without exception.
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