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Manganese dioxide oxidises hydrochloric acid to chlorine and gives manganous chloride and water. |
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Answer» Solution :(a) The skeleton equation is written as `MnO_(2)+HCl to MnCl_(2)+Cl_(2)+H_(2)O` (b) FOCUSING on the oxidation numbers `overset(+4)(Mn) overset(-2)(O_(2)) +overset(+1)(H) overset(-1)(Cl) to overset(+2)(Mn) overset(-1)(Cl_(2)) +overset(Cl_(2))+overset(+1)(H_(2)) overset(-2)(O)` (c) Locating atoms undergoing CHANGE in oxidation numbers `overset(+4)(Mn) O_(2)+H overset(-1)(Cl) to overset(+2)(MnCl_(2))+overset(0)(Cl_(2))+H_(2)O` (d) Determining the change in oxidation number  (e) Cris-crossing these changes in the oxidation numbers `MnO_(2)+2HCl to MnCl_(2)+Cl_(2)+H_(2)O` (F) Balancing the atoms other than hydrogen and OXYGEN `MnO_(2)+2HCl +2HCl to MnCl_(2)+Cl_(2)+H_(2)PO` (g) Balancing the atoms hydrogen and oxygen `MnO_(2)+4HCl to MnCl_(2)+Cl_(2)+H_(2)O` This is balanced equations. |
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