chapter 9

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Chemistry

IB Chemistry (HL)

Redox Processes

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8 Terms

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voltaic cell
chemical energy is converted into electrical energy by means of chemical reactions
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electromotive force
generated when electrons flow from the half-cell with more negative charge to the half-cell with more positive charge
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standard electrode potential
electromotive force when a half-cell is connected to the standard hydrogen electrode
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salt bridge

balances charges

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electrolysis
an electric current is used to break down a substance into its components
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electrolyte
molten/aqueous compounds that conduct electricity by flow of ions
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conductors
metals and graphite that conduct electricity by flow of electrons
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types of half cell

1. solid and aq solution
2. aq solution and gases
3. aq solutions with different ionic charges