Acid Base Stregnth and pH

Acid Base Stregnth and pH

By Andrew Baldwin

Multiple Choice

A sour taste is a characteristic of:

• acids

• bases

• neutral

• pH scale

Multiple Choice

Which is a characteristic of a base?

• tastes sour

• found mostly in foods

• feels slippery

• turn litmus paper red

Multiple Choice

According to Arrhenius, what is the definition of an ACID?

• a substance that contains hydroxide and ionizes to produce OH-

• a substance that contains hydrogen and ionizes to produce H+

• a substance that contains hydrogen and ionizes to produce OH-

• a substance that contains hydroxide and ionizes to produce H+

Multiple Choice

NaOH is:

• an Arrhenius base

• an Arrhenius acid

• neither an acid nor a base

• both an acid and a base

Multiple Choice

If a solution is basic which ion will be more present?

• H+
• K+
• OH-
• H-

Multiple Choice

Which of the following shows the correct conjugate acid base pair?

• SO₃^2-(base) / HSO₃^- (conjugate base)
• HPO₄^2- (acid) / HSO₃^-(conjugate base)
• SO₃^2-(acid) / HSO₃^- (conjugate base)
• HPO₄^2- (acid) / PO₄^3-(conjugate base)

Poll

Rate your knowledge of Acid-base definitions and properties.

• I completely understand and can teach others about it.

• I understand but am not ready to explain.

• I remember the base definitions but am struggling with applying them.

• We had a lesson on Acid-base definitions?

How do we do this on the calculator?

Multiple Choice

Which describes a base?

• Turns blue litmus red
• Turns red litmus blue
• pH of 7
• pH of 3

Multiple Choice

Drain cleaner has a pH of 13. What is drain cleaner?

• An acid.
• A strong base.
• Neutral.
• A weak base.

Multiple Choice

If a substance has a pH of 10 it is considered

• Acidic
• Basic
• Neutral

Multiple Choice

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer