Acid Base Chemistry

The _____ scale measures the acidity of substances.

Four substances were tested for pH: lemon juice (pH 2), baking soda (pH 9), bleach (pH 12), and milk (pH 6). Rank these 4 substances from most basic to most acidic?

• lemon juice, milk, baking soda, bleach

• bleach, baking soda, milk, lemon juice

• milk, lemon juice, baking soda, bleach

• baking soda, bleach, lemon juice, milk

Is HNO₃ an acid or base?

• Acid

• Base

An unknown substance was tested and found to have an extremely high concentration of hydroxide ions, OH^-. and very low concentration of hydronium ions, H₃O⁺. Which pH would make the most sense?

• pH = 2

• pH = 6

• pH = 8

• pH = 12

A process used to find the molarity of an acid or base solution.

• molarity

• titration

• endpoint

• neutralization

What is the concentration of a HCl solution if 24.7 ml of HCl are completely neutrilized by 35.8 ml of a 0.25 M NaOH solution?

• 0.362 M

• 3.62 M

• 0.172 M

• 35.4 M

Tags

NGSS.HS-PS1-7

Match the following

• Calcium Hydroxide

• H₂SO₄

• Sulfuric Acid

• HCl

• Nitric Acid

• Ca(OH)₂

• Sodium Hydroxide

• HNO₃

• Hydrochloric Acid

• NaOH

Which of the following acids has a pKa value of approximately -10?

• HCl

• H2SO4

• CH3COOH

• H3PO4

Match each pH with the correct category:

• 13.5

• strong base

• 7.0

• neutral

• 1.0

• strong acid

• 8.5

• weak acid

• 5.5

• weak base

Equal amounts of an acid and a base are mixed in a beaker. When neutralization is complete, what is in the beaker besides salt?

• acid only

• base only

• water

Tags

NGSS.MS-PS1-5