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IceJOKER [234]
3 years ago
11

Which of the following is not an oxidation-reduction reaction? (pictured below)

Chemistry
1 answer:
Elanso [62]3 years ago
3 0
Answer is: the third reaction.
Elements in this chemical reaction do not change their oxidation number. Hydrogen has oxydation number +1, sulfur oxidation number is +6, oxygen has oxidation number -2 and barium has +2 on both sides of chemical reaction. In other reactions elements change their oxidation numbers.
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