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English 15 Public

Electrylysis and Voltaic Cell

Study Slideshow

What is the name of compound that is being decomposed in electrolytic cell?

Electrolytes

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Is this oxidation or reduction?

Oxidation

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Mention two types of electrode!

Cathode and anode

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What is the positive electrode?

Anode

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What is the negative electrode?

Cathode

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in electrolysis of molten copper oxide, CuO, which ion goes to cathode?

copper ion

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In electrolysis of molten sodium chloride, NaCl, which ion goes to anode?

Chlorine ion

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In electrolysis of molten aluminium oxide, Al2O3, what will be produced at cathode?

aluminium metal

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In electrolysis of molten magnesium bromide, MgBr2, what will be produced at anode?

bromine gas

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What is the half reaction of Cr3+/Cr?

Cr3+ + 3e --> Cr

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From which electrode to which electrode the electrons flow?

From anode to cathode

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Calculate the E cell of these half-equations.

+1.10 V

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Which species will react at the cathode?

Chlorine

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Which species will react at the anode?

copper

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What is the E cell value of these half-cells?

+0.47 V

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