9.1 Oxidation and Reduction Flashcards

1
Q

Oxidation number of Hydrogen + a nonmetal

A

+1

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2
Q

Oxidation number of Hydrogen + a metal

A

-1

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3
Q

What is the oxidation of a monatomic ion?

A

Ionic charge

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4
Q

Oxidation number of Group 1 elements in compounds

A

+1

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5
Q

Oxidation number of Group 2 elements in compounds

A

+2

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6
Q

Oxidation group 7 elements in compounds

A

-1

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7
Q

What is the exclusion to the oxidation rule of group 7 elements in compounds?

A

when group 7 elements are in compounds with elements that have a higher electronegativity, the oxidation number becomes positive

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8
Q

What is the sum of oxidation numbers in a Neutral compound?

A

zero

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9
Q

What is the sum of oxidation numbers in polyatomic ions?

A

The ionic charge of the ion.

ex. SO4^2- =-2

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10
Q

What is the oxidation number of an atom that is uncombined?

A

Zero

ex. Na . N2 . S8

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11
Q

How do transition metals and Main group non metals show more than one oxidation state?

A

Through roman numerals.

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12
Q

When are roman numerals shown to indicate the oxidation state of compounds?

A

When naming the compounds

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13
Q

How can you recognize when a redox reaction is oxidation?

A

When the oxidation number of the atom increases

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14
Q

How do you recognize when a redox reaction is reduction?

A

When the oxidation of an atom decreases

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15
Q

What is Oxidation?

A

Gain of oxygen
increase of oxidation number
Loss of hydrogen
loss control of electrons.

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16
Q

What is Reduction?

A

Loss of Oxygen
oxidation number decreases
gain of hydrogen
gain electrons from another atom

17
Q

In Reduction Redox reactions what type of ion is formed?

A

Negative ions

18
Q

In an Oxidation Redox Reaction what type of ion is formed?

A

Positive ions.

19
Q

Is -2 a oxidation number or ionic charge?

A

ionic charge

20
Q

Is 3- an oxidation number or ionic charge?

A

Oxidation number

21
Q

When are electrons on the product side?

A

Oxidizing

22
Q

When are electrons on the reactant side ?

A

Reducing