The Ka of acetic acid is 1.76 10-5. The pH of a buffer prepared ...

[JMatthes]

The Ka of acetic acid is 1.76  10-5. The pH of a buffer prepared by combining 15.0 mL of 1.00 M potassium acetate and 50.0 mL of 1.00 M acetic acid is ________.
 
  A) 1.705
  B) 0.851
  C) 3.406
  D) 4.232
  E) 2.383

Question 2

In which orbital does an electron in a nitrogen atom experience the greatest shielding?
 
  A) 3p
  B) 3s
  C) 2p
  D) 2s
  E) 1s

[mcomstock09]

Answer to Question 1

D

Answer to Question 2

C

[JMatthes]

Excellent

[6ana001]

Gracias!