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Chemistry > Oxidation And Reduction Unit6 > Flashcards

Oxidation And Reduction Unit6 Flashcards

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1
Q

Oxidation

A

Loss of electrons

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2
Q

Reduction

A

Gain of electrons

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3
Q

Reducing agent

A

Substance oxidized

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4
Q

Oxidizing agent

A

Substance being reduced

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5
Q

What do you do to basic reactions and not acidic

A

Add OH - to both sides and cancel H20

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6
Q

Oxidation number

A

Charge (real or apparent) on an atom of all bonds are assumed to be ionic

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7
Q

What is an electrochemical cell

A

Chemical system in which a spontaneous redox reaction produces electrical work

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8
Q

Electrolyte solution

A

Contains ions and cations, and transfers electric current

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9
Q

What do electrodes do

A

Supply ions to the electrolyte solution

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10
Q

Electrode types and how they flow

A

Anode (oxidation occurred -ve)
Cathode (reduction occurs +ve)
Electrons flow from anode to cathode

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11
Q

Salt bridge

A

Concentrated solution of ions which allows for the movement of ions within the cell

Prevent the buildup of charges the cell 

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12
Q

Half cell potential

A

The contribution of each half reaction to the voltage of the entire cell

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13
Q

Difference between electrolytic cell and electrochemical cell (4)

A

ELECTROCHEMICAL
-creates an electric current
-Exothermic
-Anode-
-Cathode+

ELECTROLYTIC
-Needs an electric current supplied to it
-Endothermic
-Anode+
-Cathode-

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14
Q

Cathode

A

Electrode where reduction occurs

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15
Q

Anode

A

Electrode where oxidation occurs

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16
Q

Electrolysis

A

Process that occurs in an electrolytic cell can be used for plating objects and making protective coating

17
Q

1/2 Reaction

A

Splitting a reaction into 2 parts by splitting the equation into element pairs

18
Q

LEOR

A

Loss of electrons oxidation. Right

19
Q

GERL

A

Gain of electrons reduction. Left

20
Q

Electrolytic cell

A

Chemical system where a redox reaction occurs, but an electric current must be supplied

Chemistry (6 decks)

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