Olympiad Electrochem

Electrochemistry is

• Study of electron in atom

• Study of electricity in molecules

• The relationship between chemical reactions and electricity

• the study of electrons moving from one a tom to another

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NGSS.HS-PS2-5

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An oxidizing agent will

• increase in mass

• lose electrons

• be reduced

• increase in oxidation number

Oxidation-reduction reactions occur because of the competition between particles for

• electrons

• positrons

• protons

• neutrons

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NGSS.HS-PS1-1

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Galvanic cells convert

• mechanical energy in to electrical energy

• potential energy in to electrical energy

• electrical energy in to chemical energy

• chemical energy in to electrical energy

An electrolytic cell uses electrical energy to drive

• chemical reaction

• physical reaction

• no reaction

• none of above

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NGSS.HS-PS1-2

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What unit of measurement do we use to measure electrical potential?

• Watts
• Volts
• Amps
• Ohms

Applications of Kohlrausch’s law

• Determination of Dissociation constant

• Degree of dissociation

• Solubility of sparingly soluble salts

• All the above

E^O represents

• Single electrode potential

• Standard electrode potential

• Standard hydrogen electrode

• None

In electrochemical cell, oxidation takes place at

• Right

• Left

• Top

• Bottom

In electrochemical cell, reduction takes place at

• Right

• Left

• Top

• Bottom