Redox Reactions
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New answer posted
5 months agoContributor-Level 10
(a) Combination reactions (b) Decomposition reactions (c) displacement reactions (d) Disproportionation reactions.
New answer posted
5 months agoContributor-Level 10
Electrochemical series is the series of elements in which elements are arranged in decreasing order of their reduction potential.
Reducing power goes on increasing whereas oxidising power goes on decreasing down the series.
New answer posted
5 months agoContributor-Level 10
Electrochemical cell is a device in which the redox reaction is carried indirectly and the decrease in free energy appears as electrical energy.
At cathode there is gain of electrons.
At anode there is loss of electrons.
In electrochemical cell anode is written on L.H.S while cathode is written on R.H.S.
New answer posted
5 months agoContributor-Level 10
(b) Oxidation involves gain of one or more electrons by a species during a reaction.
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5 months agoNew answer posted
5 months agoContributor-Level 10
(c) In ClO4–, chlorine is in maximum oxidation state of +7. So, it does not show the disproportionation reaction.
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5 months agoContributor-Level 10
(d) In H2O2 oxidation number of O = -1 and can vary from 0 to -2 (+2 is possible in OF2). The oxidation number can decrease or increase, because of this H2O2 can act both asoxidising and reducing agent.
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5 months agoContributor-Level 10
(b) Both are correct statements but reason is not correct for the assertion. The highest oxidation number of a representative element is the group number for the first two groups and the group number minus 10 (following the long form of periodic table) for the other groups.
New answer posted
5 months agoContributor-Level 10
Reason: It can react both as an anode as well a cathode in an electrochemical cell.
Answer:
(a) A standard hydrogen electrode is called a reversible electrode because it can react both as anode as well as cathode in an electrochemical cell.
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