Electrochemistry

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

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

• electrons

• positrons

• protons

• neutrons

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

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

cathode is the electrode where

• reduction takes place

• oxidation takes place

• either reduction or oxidation

• none of these

Which energy conversion shown below takes place in an electrochemical cell?

• Electrical to chemical
• Mechanical to chemical
• Mechanical to electrical
• Chemical to electrical

Oxidation happens at the

• Anode
• Cathode
• Salt bridge
• Voltmeter

If the cell potential is negative, the reaction is?

•  a success
• spontaneous
• not spontaneous