Chemistry Ch 20 Content
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If an atom is reduced in a redox reaction then
another atom in the system must be oxidized
______ is another name for an oxidation-reduction reaction
Electrons are ______ in reduction reaction and ______ in oxidation reactions
Electrons are ______ in an oxidation-reduction reaction
Cu ↣ Cu+2 + 2e- is a ______ reaction
in 2Na + 2H2O ⇨ 2NaOH + H2 and
2Na + S ⇨ Na2S what is Na
Na is the reducing agent
in CH4+ 2O2⇨ CO2+ H2O
O2 is what?
O2 is the oxidizing agent
the oxidation number of hydrogen when it is in a compound other than hydride is _____.
the oxidation number of bromine in bromine gas is _____.
The oxidation number for each atom in
the charge of an atom would have in a compound if its bonding electrons were assigned to the more electronegative atom
What is Cr's oxidation number in
K2Cr2O7 + H2O + S ⇨ KOH + Cr2O3 + SO4
In H2O + Cl2 + SO2 ⇨ HCl + H2SO4
what is reduced?
Cl atom is reduced
In HNO3 + HBr ⇨ NO + Br2 + H2O
what is oxidized?
The Br atom is oxidized
_______ reactions include many single replacement reactions, combination reactions, decomposition reactions, and combustion reactions
Ionic reactions are best balanced by _____
the half reaction method
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