Acids and Bases

Question 1

What is the defenition of a Brønsted-Lowry acid/base?

Answer 1

Acid = proton donor

Base = proton acceptor

Question 2

What is the defention of pH?

Answer 2

pH=-log₁₀[H+}

Question 3

What is the k_w equation?

Answer 3

k_w=[H+][OH-]

Question 4

What is the equation for pK_a?

Answer 4

pK_a= -log₁₀[k_a]

Question 5

What is the equation for an acid and water?

Answer 5

HA(aq) + H20(l)

Question 6

Whats the equation for a base and water?

Answer 6

B + H₂0 → HB+ + OH-

Question 7

What are the uses for pH?

Answer 7

Used in drugs; end products; blood; agriculture

Question 8

How to work out ph or pOH if you only have one or the other

Answer 8

pH + pOH = 14

Question 10

What do acidic buffers and basic buffers control?

Answer 10

Acidic buffers control H+ concentration. Basic buffers control OH- concentration

Question 11

What is a buffer?

Answer 11

A buffer solutions is a solution which can resist a change in pH when small amounts of acid or base are added

Question 12

What is an acidic buffer?

Answer 12

A weak acid (ethanoic acid) and the soluable salt of the acid (sodium ethanoate)

Question 13

What is a basic buffer?

Answer 13

Weak base (amonia) and the soluable salt of the base (ammonium chloride)