Bellwork 1 Week 3 4th Nine Weeks

What is the pH of a solution that has a [H+] of 2.5 x 10^-5?

• 4.60

• 2.5

• 5.0

• 7

If the [H₃O⁺] of a solution is 1 x 10^-3 M, the pH is

• 11

• -3

• 3

• 1

The [H⁺] is orange juice is
0.00020 M.  FInd the pH of orange juice.

• 1
• 3.7
• 10.3
• 13

If the [H+] of a solution is 6.8 x 10^-9 mol/L the pH is

• 8.17
• 8.2
• 9.99
• 8.62

If the hydronium ion H₃O⁺ concentration is equal to the hydroxide ion OH^- concentration, the solution is a(n)

• acid

• base

• salt

• neutral solution

Four substances were tested for pH, lemon juice (pH 2), baking soda (pH 9), bleach (pH 12), and milk (pH 6). Which of the following correctly lists the substances from most basic to 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

Which of these is a property of acidic solutions?

• they taste sour

• they feel slippery

• they are in many cleaning products

• they taste bitter

The table shows the pH of several solutions. Which solution is the most acidic?

• vinegar

• milk

• water

• bleach

Human blood has a pH between 7.35 and 7.45. What would you expect to see for the concentration of each ion?

• very high H₃O⁺ and very low OH^-

• slightly higher H₃O⁺ and slightly lower OH^-

• very high OH^- and very low H₃O⁺

• slightly higher OH^- and slightly lower H₃O⁺

• Equal concentrations of OH^- and H₃O⁺

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