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manganese dioxide is required in the laboratory preparation of oxygen gas though it does not take part in reaction? why​
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manganese dioxide is required in the laboratory preparation of oxygen gas though it does not take part in reaction? why​

User Togi
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The Manganese Dioxide doesn't take part in the chemical reaction because it is a catalyst, so it can only increase the rate of the reaction, not change the substances used.

User Enzokie
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