A buffer solution with a pH of 4.63 is prepared with 0.14 M ...

[burton19126]

A buffer solution with a pH of 4.63 is prepared with 0.14 M formic acid and ________ M sodium formate. The Ka of formic acid is 1.8  10-4.
 
  A) 1.1
  B) 2.1
  C) 5.4  10-6
  D) 3.0  10-8
  E) 0.54

Question 2

Which one of the following is considered to be ionizing radiation?
 
  A) visible light
  B) radio waves
  C) X-rays
  D) microwaves
  E) infrared radiation

[softEldritch]

Answer to Question 1

A

Answer to Question 2

C