Harris Chapter 15 Review 1 | Baamboozle - Baamboozle

English 8 Public

Electrochemistry Electrodes

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Which of the following statements is FALSE?

Reduction occurs at the cathode.

Oxidation and reduction half-reactions occur at electrodes i

All voltaic (galvanic) cells involve the use of electricity

Oxidation occurs at the anode.

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

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

Na <===> Na+ + e-

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

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

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

allows charge balance to be maintained in the cell

is tightly plugged with firm agar gel through which ions can

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

a standard hydrogen electrode

a phase boundary

a salt bridge

gas electrode

Which one of the following is the strongest reducing agent

F-

I-

Cl-

Br-

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

inexpensive

Operates in a wide range of temperatures

Simple to use

Narrow concentration range

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

True

False

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

True

False