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Which of the following are combination reactions? i) 4K + O2 → 2K2O ii) CuSO4 + 2NH4OH → (NH4)2SO4 + Cu(OH)2 iii) 2ZnS + 3O2 → 2ZnO + 2SO2 iv) Na2O + H2O → 2NaOH |
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Answer» Which of the following are combination reactions? i) 4K + O2 → 2K2O ii) CuSO4 + 2NH4OH → (NH4)2SO4 + Cu(OH)2 iii) 2ZnS + 3O2 → 2ZnO + 2SO2 iv) Na2O + H2O → 2NaOH |
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