ET unit 9 Pre-AP --- hydrogen ions and acidity

The reaction in which water molecules produce ions is called ---

• dissociation of water

• acid-base reaction

• the pH constant

• self-ionization of water

Any aqueous solution in which [H+] and [OH-] are equal is ---

• a neutral solution

• an acidic solution

• a basic solution

• a concentrated solution

The product of the [H+] and the [OH-] is always ---

• less than 1 x 10^-7

• greater than 1 x 10^-7

• 1 x 10^-14

• a neutral solution

Two samples of liquid are tested in the lab. One of the samples has a pH of 2, and the other has a pH of 9. What conclusion can be drawn from this data?

• One is a base, the other is a neutral

• One is an acid, the other is a neutral

• Both samples are acids

• One is an acid, the other is a base

Neutral solutions have a pH of:

• 0

• 1

• 7

• 14

Which is true?

• pH of less than 7 is basic; pH of more than 7 is acidic

• pH of less than 7 is acidic; pH of more than 7 is basic

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

• 4.60
• 5.0
• 2.5
• 7

The lower the pH, the greater the concentration of :

• OH-
• H+

Acidic solutions exhibit a higher ratio of H₃O⁺ ions, known as...

• neutrons

• hydroxide

• electrons

• hydronium

The products of a neutralization reaction are usually...

• salt and water

• an acid and a base

• a neutral solution

• carbon dioxide and oxygen

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5