Question #68168

1 Answer
MeneerNask
Apr 11, 2017

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_2O_2(aq)#, to which manganese dioxide #MnO_2# was added. The #MnO_2# acts as a catalyst for the following reaction:

#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).

Related questions
See all questions in Chemical Reactions and Equations
Impact of this question
1137 views around the world
You can reuse this answer
Creative Commons License