Acid-Base Reactions

Question 1

What is an acid and a base according to Browsted-Lowry?

Answer 1

Acid = Proton donor
Base = Proton acceptor

Question 2

The solution in the burette (acid) is referred to as the ___

Answer 2

Titrant

Question 3

The solution in the conical flask (base) is referred to as the ___

Answer 3

Titrand

Question 4

What is the equivalent or stoichiometric point?

Answer 4

It is the point at which a stoichiometric amount of the acid reacts with a stoichiometric amount of the base. Here, enough titrant has been added to completely react with the base.

Question 5

How do you identify the equivalence point?

Answer 5

It is often marked by a colour change on the addition of an indicator.

Question 6

Say something about the oxidation state of oxygen

Answer 6

In a compound, it is always -2, except in peroxides where it is -1.

Question 7

Say something about the oxidation state of hydrogen

Answer 7

Its oxidation state is always +1 but when it combines with a metal, it becomes -1.

Question 8

What is an oxidizing agent?

Answer 8

• Electron acceptor
• Substance which is reduced
• Substance in which O.N. decreases in the positive direction

Question 9

What is a reducing agent?

Answer 9

• Electron donor
• Substance which is oxidized
• Substance in which O.N. increases in the positive direction

Question 10

What is oxidation?

Answer 10

• Addition of oxygen
• Removal of hydrogen
• Addition of an electronegative element
• Removal of electrons

Question 11

What is reduction?

Answer 11

• Removal of oxygen
• Addition of hydrogen
• Removal of an electronegative element, addition of electropositive
• Addition of electrons