Question 1

What is the oxidation state of nitrogen in the compound NH4Br?

Accepted Answer

-3

Answer

-1

Answer

+2

Answer

+4

Question 2

n an oxidation-reduction reaction, the number of electrons lost is

Accepted Answer

equal to the number of electrons gained

Answer

less than the number of protons gained

Answer

equal to the number of protons gained

Answer

less than the number of electrons gained

Question 3

A voltaic cell converts chemical energy to

Accepted Answer

electrical energy without an external power source

Answer

nuclear energy without an external power source

Answer

electrical energy with an external power source

Answer

nuclear energy with an external power source

Question 4

In an operating voltaic cell, reduction occurs

Accepted Answer

at the cathode

Answer

at the wire

Answer

at the salt bridge

Answer

at the anode

Question 5

Which process occurs in an operating voltaic cell?

Accepted Answer

Chemical energy is converted to electrical energy.

Answer

Electrical energy is converted to chemical energy.

Answer

Reduction takes place at the anode.

Answer

Oxidation takes place at the cathode.

Question 6

An electrolytic cell differs from a voltaic cell because an electrolytic cell

Accepted Answer

requires an outside energy source for a nonspontaneous chemical reaction to occur

Answer

generates its own energy from a nonspontaneous physical reaction

Answer

generates its own energy from a spontaneous physical reaction

Answer

requires an outside energy source for a spontaneous chemical reaction to occur

Question 7

Which metal will spontaneously react with Zn2+(aq), but will not spontaneously react with Mg2+(aq)?

Accepted Answer

Mn

Answer

Cu

Answer

Ni

Answer

Ba

Question 8

Which metal reacts spontaneously with a solution containing zinc ions?

Accepted Answer

Magnesium

Answer

Copper

Answer

Silver

Answer

Nickel

Question 9

Based on Reference Table J, which metal will react spontaneously with Al3+?

Accepted Answer

Ca

Answer

Co

Answer

Cr

Answer

Cu

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