A student adds aqueous sodium hydrogencarbonate to one test tube and aqueous barium chloride to a second test tube.
The student adds dilute sulfuric acid to each test tube.
Which row has the correct observations?
| Aqueous sodium hydrogencarbonate | Aqueous barium chloride | |
|---|---|---|
| A | effervescence | precipitate |
| B | effervescence | no change |
| C | no change | precipitate |
| D | no change | no change |
Row A
Row B
Row C
Row D
3 exam-style questions on OCR A A Level Chemistry Qualitative analysis. Each one has a worked solution and a mark scheme showing where the marks go.