Exam5b-1 - Name 1 A buffer is made by adding some NaH2PO4 to a solution of H3PO4 a Write the balanced net ionic equation for this system b Identify the

Exam5b-1 - Name 1 A buffer is made by adding some NaH2PO4...

This preview shows page 1 - 4 out of 7 pages.

Name: _______________________________________________ 1. A buffer is made by adding some NaH 2 PO 4 to a solution of H 3 PO 4 . a) Write the balanced net ionic equation for this system. b) Identify the weak acid c) Identify the conjugate base of the weak acid. d) What is pK a for this system? 2. A buffer solution is made by adding 8.2 grams of sodium acetate (NaCH 3 CO 2 ) to 1L of a 0.1M acetic acid (CH 3 CO 2 H) solution. What is the pH of the resulting solution?
Image of page 1
3. Make a buffer solution with the following specifications: pH = 5.5, Volume = 2 L, total concentration of major species = 1M. a) Name the components. b) How many grams of each component would you use to make the 2L of solution. 4. What is K SP for PbI 2 if a saturated solution is found to have a concentration of Pb +2 of 1.35 x 10 -3 M?
Image of page 2
5. 100 mL of a 2M HCl solution is titrated with a 2M NaOH solution. a) What is the pH of the HCl solution before any of the NaOH solution is added? b) What volume of the NaOH solution is required to reach the equivalence point of the titration?
Image of page 3
Image of page 4

You've reached the end of your free preview.

Want to read all 7 pages?

  • Spring '08
  • SHUMAN
  • Pk, 1 Liter, 0.2M

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes