Harris Chapter 15 Review 1 | Baamboozle - Baamboozle

English 8 Public

Electrochemistry Electrodes

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Which of the following statements is FALSE?

Oxidation occurs at the anode.

All voltaic (galvanic) cells involve the use of electricity

Reduction occurs at the cathode.

Oxidation and reduction half-reactions occur at electrodes i

The half-reaction that occurs at the anode during the electrolysis of molten sodium bromide is:

2 Br- <===>Br2 + 2 e-

2 H2O <===> 2 OH- + H2

Br2 + 2 e-<===> 2 Br-

Na <===> Na+ + e-

In voltaic cells, such as those diagrammed in your text, the salt bridge _______ .

acts as a mechanism to allow mechanical mixing of the soluti

is not necessary in order for the cell to work

is tightly plugged with firm agar gel through which ions can

allows charge balance to be maintained in the cell

In the standard notation for a voltaic cell, the double vertical line "||" represents:

a salt bridge

a standard hydrogen electrode

gas electrode

a phase boundary

Which one of the following is the strongest reducing agent

F-

Br-

Cl-

I-

Which of the following is not the characteristic of ion selective electrodes

Operates in a wide range of temperatures

Simple to use

Narrow concentration range

inexpensive

T/F - Ion selective electrodes are unaffected by color or turbidity of the solution

False

True

T/F pH electrodes sensitivity to H+ is not based on Redox reactions

True

False