Acids and bases

Question 1

According to arrhenius theory what is an acid

Answer 1

a compound that supplies hydrogen atoms ( H+) in an aqueous solution

Question 2

According to arrhenius theory what is a base/ alkali

Answer 2

a compound that produces hydroxide ions in an aqueous soliton ( OH-)

Question 3

What is a limitation of arrhenius theory

Answer 3

cannot explain weak base ammonia which releases hydroxide but not OH-

Question 4

What is a strong vs weak acid and alkali

Answer 4

-strong completely disassociate into ions and (completely ionise to give H+ in acids)
- weak only partially disassociates into ions

Question 5

When pH increases by 1 how much does the molarity increase

Answer 5

10x

Question 6

If an acid is 1M what is the concentration of H+

Answer 6

1

Question 7

What is the pH range for acids

Answer 7

0-7
low pH indicates a stronger acid

Question 8

What is the pH range for bases

Answer 8

7-14
higher pH indicates a stronger base

Question 9

What does the brønsted-lowry theory say about acids and bases

Answer 9

• acid: a proton (H+) donor
• base: a proton acceptor

an atom that acts as bith an acid and base together is called amphoteric