A student has a solution of sulfuric acid, H2SO4\text{H}_2\text{SO}_4H2SO4, and a solution of sodium hydroxide, NaOH\text{NaOH}NaOH. She wants to obtain a pure, dry sample of sodium sulfate.
Describe how she can do this. Include the apparatus she should use and her experimental method.
Write a balanced symbol equation for this reaction.
The student also investigates alternative chemical reactions. The table below shows the salts she can produce from different starting reagents. Complete the table by identifying the missing entries.
| Acid used | Other starting material | Salt made |
|---|---|---|
| Nitric acid | Calcium hydroxide | (i) ________________\text{\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_}________________ |
| (ii) ________________\text{\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_}________________ | Sodium carbonate | Sodium phosphate |
| Hydrochloric acid | (iii) ________________\text{\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_}________________ | Nickel(II) chloride |
What type of reaction occurs when sulfuric acid reacts with sodium hydroxide?
41 exam-style questions on OCR GCSE Chemistry Predicting chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.