tanyarbar
Answered

Help with 3 true/false questions for chem please ! (Just needs revision!)

  1. The oxidation number of an atom of a free element is always 1.

True

False (I believe it's false)

  1. An electrolytic cell uses electric current to drive a non-spontaneous chemical reaction; but, a voltaic reaction is spontaneous and does not require electric current to proceed.

True

False

(^ not sure about this one)

  1. In a reaction, oxidation can occur independently of reduction.

True (I think its true)

False

Verified Answer :

  1. false 2. true 3.true
sdmatera

1) False, it is actually 0 not 1

2) True. Electrolytic cells have non-spontaneous reactions and voltaic cells have spontaneous ones

3) False. One species must gain the electrons that another species loses

Hope this helps

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