Acids, Bases, pH

A pH of 14 is a .....

• strong acid
• weak acid
• Strong base
• Weak base

What is the [OH^-] if the [H⁺] is 1.0 x 10^-3M?

• 1.0 x 10^-3 M
• 6.02 x 10^-23 M
• 1.0 x 10^-14 M
• 1.0 x 10^-11 M

What is the [H⁺] if the pH is 4.0?

• 1.0 x 10^-10  M
• 1.0 x 10^-4  M
• 1.0 x 10^-14  M
• 1.0 x 10^-7  M

What is the pOH of a solution that has a pH of 2?

• 10
• 12
• 14
• 1

What does a pH scale do?

• Tells you if a substance is an acid.
• Tells you if a substance is a base.
• Measures the strength or weakness of an acid or base.
• All of these are true.

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

• Acid
• Alkaline
• Base
• Buffer

The lower the pH, the greater the concentration of :

• OH^-
• H⁺

What is the pH of a 1 x 10^-3 solution of HNO₃?

• 3

• 6

• 7

• 7.5

HNO₃   is a(n)

• Acid
• Base
• neutral substance

Tags

NGSS.HS-PS1-1

If the solution of H₂CO₃ has a pH of 6.4 and a pOH of 7.6. Is it an acid, base, or neutral?

• acid
• base
• neutral