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WorksheetsElectrochemistry Quiz Review
Total questions: 18
Worksheet time: 9mins
What is oxidation number of O2 ?
What is oxidation number of Cr in CrO42-?
In the reaction Zn + H2O --> ZnO2 + H2
Which element is oxidized?
Is calcium in CaO oxidized or reduced in the following reaction?
2 CaO --> 2 Ca + O2
How would you write the electrons in the reaction Cl2 --> 2 Cl -1 ?
What reaction occurs at the anode?
USE THE EQUATION GIVEN!
In which direction do the electrons flow in a voltaic cell (battery)?
How does the salt bridge maintain the balance of charge in a voltaic cell?
It prevents the migration of electrons.
It prevents the migration of electrons.
It permits the migration of ions.
It prevents the migration of ions.
Which electrode gets smaller?
Which device requires electrical energy to produce a chemical change?
electrolytic cell
salt bridge
voltaic cell
voltmeter
An electrolytic cell differs from a voltaic cell because an electrolytic cell
generates its own energy from a spontaneous physical reaction
generates its own energy from a nonspontaneous physical reaction
requires an outside energy source for a spontaneous chemical reaction to occur
requires an outside energy source for a nonspontaneous chemical reaction to occur
Which electrode would have an item (key/necklace/spoon) that would be plated and gain mass?
cathode
anode
