Which of the following gives dioxygen and metal on heating?A. `BaO_(2)`B. `Ag_(2)O`C. `MnO_(2)`D. `Pb_(3)O_(4)`

Which of the following gives dioxygen and metal on heating?A. `BaO_(2)

1.	Which of the following gives dioxygen and metal on heating?A. `BaO_(2)`B. `Ag_(2)O`C. `MnO_(2)`D. `Pb_(3)O_(4)`
Answer» Correct Answer - 2 We can obtain dioxygen by (i) thermal decomposition of the oxides of matel which are low in the electrochemical series: `2HgOoverset(450^(@)C)rarr2Hg+O_(2)` `2Ag_(2)O overset(350^(@)C)rarr4Ag+O_(2)` (ii) the thermal deocmpositonof higer oxides: `2Pb_(3)O_(4)overset(Delta)rarr6PbO+O_(2)` `2PbO_(2)overset(Delta)rarr2PbO+O_(2)` `3MnO_(2)overset(Delta)rarrMn_(3)O_(4)+O_(2)` (iii) the thermal decomposition of peroxides: `2BaO_(2)overset(Delta)rarr2BaO+O_(2)`

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Which of the following gives dioxygen and metal on heating?A. `BaO_(2)`B. `Ag_(2)O`C. `MnO_(2)`D. `Pb_(3)O_(4)`

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