- Place a few pieces of granulated zinc metal in a test tube.
- Add 2 mL of sodium hydroxide solution and warm the contents of the test tube.
- Repeat the rest of the steps as in Activity 2.3 and record your observations.
✅ Answer: Here also, hydrogen is formed.
2NaOH(aq) + Zn(s) → Na2ZnO2(s) + H2(g)