ICSE Class 10 Chemistry
Question 6 of 6
Analytical Chemistry — Use of Ammonium & Sodium Hydroxide — Question 4
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Question Question 4
| Action of Alkalis — on oxides and hydroxides of certain metals | |
|---|---|
| 19. Zinc oxide | ZnO + NaOH ⟶ ............... + ............... |
| 20. Zinc hydroxide | Zn(OH)2 + NaOH ⟶ ............... + ............... |
| 21. Lead [II] oxide | PbO + NaOH ⟶ ............... + ............... |
| 22. Lead hydroxide | Pb(OH)2 + NaOH ⟶ ............... + ............... |
| 23. Aluminium oxide | Al2O3 + NaOH ⟶ ............... + ............... |
| 24. Aluminium hydroxide | Al(OH)3 + KOH ⟶ ............... + ............... |
| Action of Alkalis — on oxides and hydroxides of certain metals | |
|---|---|
| 19. Zinc oxide | ZnO + 2NaOH ⟶ Na2ZnO2 + H2O |
| 20. Zinc hydroxide | Zn(OH)2 + 2NaOH ⟶ Na2ZnO2 + 2H2O |
| 21. Lead [II] oxide | PbO + 2NaOH ⟶ Na2PbO2 + H2O |
| 22. Lead hydroxide | Pb(OH)2 + 2NaOH ⟶ Na2PbO2 + 2H2O |
| 23. Aluminium oxide | Al2O3 + 2NaOH ⟶ 2NaAlO2 + H2O |
| 24. Aluminium hydroxide | Al(OH)3 + KOH ⟶ KAlO2 + 2H2O |