A student is given a mixture of two solid ionic compounds, A and B. Each solid contains one cation and one anion.
Compound A is insoluble in water. Compound B is soluble in water.
Describe how the student could separate the mixture to obtain solid A and a solution of B.
The table shows the results of two tests the student does on a solution of B.
| Test | Observation |
|---|---|
| Test 1: Add dilute sodium hydroxide solution dropwise | A white precipitate forms that is insoluble in excess |
| Test 2: Add dilute nitric acid followed by silver nitrate solution | A yellow precipitate forms |
Use the information in the table to identify the cation and the anion present in compound B.
Cation: Anion:
Identify the precipitate formed in Test 2.
The student adds dilute hydrochloric acid to solid A. A gas that turns limewater milky is given off.
Explain which anion is present in solid A.
Give a test to show that solid A contains calcium ions.
Test: Result:
