tanyarbar
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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)

2. 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)

3. In a reaction, oxidation can occur independently of reduction.
True (I think its true)
False

Respuesta :

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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