Question #68168

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Question #68168

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Answer 1 · 2017-04-11T10:41:29

Could be anything, like magnesium powder added to dilute acid, or many others.

Explanation:

My bet though, would be on a relatively strong hydrogen peroxide solution $H_{2} O_{2} (a q)$ $H_2O_2(aq)$ , to which manganese dioxide $M n O_{2}$ $MnO_2$ was added. The $M n O_{2}$ $MnO_2$ acts as a catalyst for the following reaction:

$2 H_{2} O_{2} (a q) \to 2 H_{2} O (l) + O_{2} (g)$ $2H_2O_2(aq)->2H_2O(l)+O_2(g)$

If you want to make sure you could test for the gas being oxygen (glowing splinter).

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Question #68168

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