Question 96 Which of the following materials is most likely to undergo oxidation

Question

Question 96

Which of the following materials is most likely to undergo oxidation?

A.Na

B.Na+

C.Cl2

D.Cl-

E.both Na and Na+

Question 97

How does connecting a metal like iron with a wire to a metal that is easier to oxidize like zinc help prevent corrosion of the iron?

A.The other metal is oxidized instead and the electrons travel to the iron, keeping it from oxidizing.

B.The other metal absorbs the electrons from the iron, which keeps the iron from undergoing oxidation.

C.The wire is acting as an oxidant and keeps the two metals from undergoing other chemical reactions.

D.There is no salt-bridge, so there is no reaction between the two metals.

E.The other metal is oxidized and adsorbs all the oxidant, keeping it away from the iron.

Question 98

In a battery, if the following oxidation-reduction reactions takes place normally: What reaction would be taking place if you were charging the battery?

Mn2O3 + ZnO - 2MnO2 + Zn

A.2 MnO2 + Zn - Mn2O3 + ZnO

B.ZnO - Zn

C.Mn2O3 MnO2

D.All of these

E.None of these

Question 99

Which of the following statements is untrue about oxidation and reduction processes?

A.An oxidation can happen without a reduction.

B.It involves the exchange of electrons.

C.Often ions are generated or consumed.

D.Electrons are often involved in oxidation and reduction reactions.

E.All of these are true.

Question 100

Why does a battery that has thick zinc walls last longer than one that has thin zinc walls?

A.Thick zinc walls prevent the battery from over heating.

B.Thicker zinc walls prevent electrons from being lost into the surrounding environment.

C.Thicker zinc walls last longer at holding in the battery acid.

D.The zinc walls are transformed into zinc ions as the battery provides electricity.

Explanation / Answer

96) Ans: (A)

Reason: Na atomic number is 11. It is the IA group of element having one valency electron, It can lose the electron and get stable Ne electron configuration.

Oxidation:

Na --------> Na+ + e-

The Na+ of other option in question is having the Innert electron configuration (Ne), C1- is having the Ar innert gas configuration and Cl2 is having the covalent bond both the atoms are innert gas configuration. Hence these are not under goes oxidation.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.