1 In the above reaction, the oxidation state of zinc changes from ___-7-6-5-4-3-
ID: 1026575 • Letter: 1
Question
1
In the above reaction, the oxidation state of zinc changes from ___-7-6-5-4-3-2-10+1+2+3+4+5+6+7 to ___-7-6-5-4-3-2-10+1+2+3+4+5+6+7.
How many electrons are transferred in the reaction?
2
In the above reaction, the oxidation state of lead changes from ___-7-6-5-4-3-2-10+1+2+3+4+5+6+7 to ___-7-6-5-4-3-2-10+1+2+3+4+5+6+7.
How many electrons are transferred in the reaction?
3
In the above reaction, the oxidation state of phosphoruschanges from ___-7-6-5-4-3-2-10+1+2+3+4+5+6+7 to ___-7-6-5-4-3-2-10+1+2+3+4+5+6+7.
How many electrons are transferred in the reaction?
Explanation / Answer
3Zn(OH)2 + Xe+ OH----------->HXeO4- + 3Zn+ 3H2
The oxidation number of Zn change from +2 to 0
3Zn^2+ + 6e^----------------------> 3Zn
6 electrons are transferred
2.
Ni + Pb2+----------->Pb + Ni2+
The oxidation number of lead chnage from +2 to 0
Ni ---------------> Ni2^+ + 2e^-
Pb^2+ (aq) + 2e^- -------------> Pb(s)
2 electrons are transferred in the reaction
3.
3Cl2 + 2PH3+ 6OH----------->6Cl- + 2P+ 6H2O
the oxidation state of phosphorus changes from -3 to 0
3Cl2 + 6e^- -------------> 6Cl^-
6 electrons are transferred in the reaction
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