transfer of electrons oxidation state rule number 1
TRANSCRIPT
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Transfer of electrons
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Oxidation state
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Rule number 1
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Rule number 2
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Rule number 3
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Rule number 4
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Rule number 5
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Rule number 6
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Rule number 7
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Rule number 8
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Let’s practice… Determine the oxidation numbers for
the atoms in the compound NaCl.
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Determine which atom will have a positive or negative oxidation number.
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Determine the oxidation number for each atom
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Check whether the oxidation numbers add up to the overall charge
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Give the oxidation number of sulfur in a sulphate ion
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Determine which atom will have a positive or negative oxidation number by looking at the electronegativity
values.
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Determine the oxidation number for each atom.
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Determine the oxidation number of sulfur by using the fact that the oxidation numbers of the atoms must add
up to the charge on the molecule
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Determine the oxidation states of the elements K and Br on both the reactant
and product side of the following reaction: 2K + Br2 →2KBr
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In the product determine which atom will have a positive or negative oxidation number by looking at the
electronegativity values
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Use the valency of the elements in the product to determine the oxidation numbers.
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Check whether the oxidation numbers add up to the charge on the compound
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Redox ReactionsReduction-Oxidation
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Let’s look at an example of this…
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(2x)
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Half-reaction
The oxidation or reduction reaction part of a redox reaction. It is obtained by considering the change in oxidation
states of the individual substances that are involved in the redox reaction
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Oxidation is the loss of electrons and leads to an increase in oxidation number
Reduction is the gain of electrons and leads to a decrease in oxidation number
OILRIG Oxidation Is Loss of electrons and
Reduction Is Gain.