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anonymous

  • one year ago

Which of the following chemical reactions is not an oxidation-reduction reaction?

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    for some reason, i got the first one wrong on my test...

  3. anonymous
    • one year ago
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    @dan815 @zepdrix @thomaster @undeadknight26 @surjithayer @mathmate @Jadeishere @Jaynator495 @superhelp101 @TheRaggedyDoctor @amoodarya @aryandecoolest @sweetburger

  4. Jadeishere
    • one year ago
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    I think it's A, but idk how to explain why

  5. anonymous
    • one year ago
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    @Jadeishere i thought so too but idk why they marked it wrong! ):

  6. anonymous
    • one year ago
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    I would say C. Is it correct?

  7. Jadeishere
    • one year ago
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    So oxi-red reactions charge from one side to the other, and A does do that with Ba... Wow, now I know why it's wrong

  8. mathmate
    • one year ago
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    The best way to answer this kind of (defition related) questions is to understand what the definition means, and learn about it. Here is a link that will give you the answer (and more): http://www.shodor.org/unchem/advanced/redox/

  9. anonymous
    • one year ago
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    @Jadeishere @Hoslos so we agree on C?

  10. anonymous
    • one year ago
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    Let me explain. Oxidation-Reduction reactions are the one in which from reactants to products side, there has been loss and gain of electron in at least 2 different elements. NB: The oxidation number of an element in its standard state is 0. C answers it because at the reactants side, Zn has oxidation number 0 and on the products side, has oxidation number +2. On the other hand, the Zn could have lowered its oxidation number on the products side, given that the oxidation number of S can also change, affecting the Zn's. Hydrogen in the reactants side had oxidation number +1 and in the products side, 0. Meaning, it reduced. Zn also appeared to reduce. At the end of the day, we cannot find the element which oxidized, hence it is not an oxidation-reduction reaction.

  11. anonymous
    • one year ago
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    it was actually wrong )): @Hoslos

  12. anonymous
    • one year ago
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    Then the answer must be A. Because in both B and D, the reactants had 0 oxidation numbers and in the products side, one of them increased and the other reduced, making them reduction - oxidation reactions.

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