AP Chemistry pH

If a solution has a [H⁺] of 1.2 x 10^-4M what is the [OH^-]?

• 8.3 x 10^-4M 
• 8.3 x 10^-11M 
• 1.2 x 10¹⁰M 
• 1.2 x 10^-4M 

What is the conjugate acid in the following equation?

• PO₄^3- 
• HNO₃ 
• NO₃^- 
• HPO₄^2-
  

What is the conjugate base in the following reaction?

• HCO₃^- 
• HCl
•  H₂CO₃ 
• Cl^-

Which of the following is not a strong acid?

• HCl
• HF
• HBr
• HNO₃

I have a pOH have 4.23. Am I acidic or basic?

• Acidic
• Basic
• Neutral

A solution contains 0.04 M of a weak acid. Calculate the pH of the solution knowing that the K_a for the acid is 1.6 x 10^-7

• It is not possible to solve if the identity of the acid is not known

• 4.1

• 4.9

• Because the Ka is very small, the pH is close to neutral (about 6)

What is the pH of a 0.053 M solution of potassium hydroxide

• 6.91

• 12.72

• 7.33

• 1.28

The K_w constant is:

• 1.0 x 10^-14
• 1.0 x 10¹⁴
• 6.022 x 10²³
• 6.0634 x 10^-34

Which of the following correctly describes the strengths of the acids in solution?

• HA and HB are both examples of strong acids.
• HA and HB are both examples of weak acids.
• HA is an example of a strong acid, HB is an example of a weak acid.
• HA is an example of a weak acid, HB is an example of a strong acid. 

This solution is filled with:

• Weak Acid

• Strong Base

• Strong Acid

• Weak Base