pH

pH

Poll

What did you get on the quiz yesterday, without extra credit? No one will see your answer.

• Below 70

• 70-80

• 80-90

• 90+

Poll

What was the hardest part of the quiz yesterday?

• Using formulas (like HCl) to determine names

• Using names to determine formulas

• pH levels

• Determine conjugate acids and bases

Multiple Choice

What is the formula for Hydrosulfuric Acid?

• H₂(SO₃)

• H₂S

• H₂(SO₂)

• H₂(SO₄)

Multiple Choice

Name the acid: H₃PO₃

PO3 = Phosphite

• hydrophosphoric acid

• phosphorous acid

• phosphoric acid

• phosphoric hydroxide

Multiple Choice

Name HF

• hydrofluoric acid

• hydrofluorous acid

• fluorous acid

• fluoric acid

Multiple Choice

What is the formula for Nitric Acid?

Nitrite = NO₂^-1

Nitrate = NO₃^-1

• HNO₂

• HNO₃

• HNO₄

• H₂NO₃

Multiple Choice

A Bronsted Lowry base:

• donates H+ to another substance

• accepts H+ from another substance

• produces H+

• produces OH-

Multiple Choice

A Bronsted Lowry acid:

• donates H+ to another substance

• accepts H+ from another substance

• produces H+

• produces OH-

Multiple Choice

What is the conjugate base in the following reaction?

HCO₃^- + HCl → H₂CO₃ + Cl^-

• HCO₃^-

• HCl

• H₂CO₃

• Cl^-

Multiple Choice

What is the conjugate acid in the following reaction?

HCO₃^- + HCl → H₂CO₃ + Cl^-

• HCO₃^-

• HCl

• H₂CO₃

• Cl^-

pH

• pH measures the concentration of H+ ions in solution

• Ranges from 0-14

• 7 is "heaven" or neutral

• Anything below a 7 is an acid

• Anything above a 7 is a base

Multiple Choice

pH 14

• Acid

• Base

Multiple Choice

pH 3

• Acid

• Base

Multiple Choice

A substance that dissolves into OH^- ions in water

• 1

• 3

• 7

• 9

Multiple Choice

A substance that donates a proton in a chemical reaction

• 1

• 7

• 9

• 11

Multiple Choice

A substance that turns litmus paper blue

• 1

• 3

• 7

• 11

pH = Potential of hydrogen

• pH is a measure of concentration hydrogen ions in a solution

• Acids dissolve into H+ ion

• The better an acid is at dissolving the lower the pH or "stronger acid"

• Bases dissolve into OH^- ions

• The worse a base is at dissolving, the higher the pH or "stronger base."

Multiple Choice

The picture below shows the relative concentrations of H+ and OH- in a solution. Is the solution an acid or a base?

• acid

• base

Multiple Choice

Which of the following is the strongest base?

• 4

• 14

• 7

• 11

Multiple Choice

Which of the following is the strongest acid?

• 1

• 5

• 3

• 8

Multiple Choice

A pH of 1 is how many times more acidic than a pH of 2?

• 2

• 1

• 10

• 100

Multiple Choice

A pH of 3 is how many times more acidic than a pH of 5?

• 2

• 20

• 10

• 100