pH, mixtures and separation mehotds

The pH scale is a range from:

• 1-7
• 0-14
• 1-5
• 1-20

If the pH of a solution is 5.6 the pOH is

• 6.5
• 12.4
• 8.4
• 5.6

What is the equation for calculating pH?

• pH = [H⁺]

• pH = log [H⁺]

• pH = -log[OH^-]

• pH = -log [H⁺]

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

• acid

• base

• salt

• neutral solution

What is the only substance with a neutral pH of 7?

• Milk

• Orange Juice

• Pure Water

• Blood

• All Water

In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?

• Both of the solution are bases

• Both of the solution are acids

• The Baking soda is an acid and the Bleach is a base

• The baking soda is a base and the Bleach is an acid.

Water has a neutral because

• it has more H+ ions than OH-

• it has more OH- ions than H+

• it does not produce any ions

• it has an equal amount of H+ and OH- in solution

A solution has a pH of 7.0.  What would happen to the pH if H ions were added?

• pH would go up
• pH would go down
• pH would stay the same
• None of these

A chemical has a pH = 6. It would be best described as

• Strong acid

• Strong base

• Weak acid

• Weak base

What does pH measure?

• the amount of hydrogen (H⁺) ions

• the amount of hydroxide (OH^-) ions

• amount of water

• all of the above