Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. chemistry
  3. a buffer that contains 0.16 m of a base, b and 0.2

A buffer that contains 0.16 M of a base, B and 0.27 M of its conjugate...

Free

60.1K

Verified Solution

Question

Chemistry

A buffer that contains 0.16 M of a base, B and 0.27 M of itsconjugate acid BH+, has a pH of 8.56. What is the pH after 0.02 molof Ba(OH)2 are added to 0.52 L of the solution?

Answer & Explanation Solved by verified expert
4.4 Ratings (745 Votes)

no of moles of base B = molarity * volume in L

                                    = 0.16*0.52 = 0.0832 moles

no of moles of conjugate base = molarity * volume in L

                                                  = 0.27*0.52 = 0.1404 moles

      POH = 14-PH

              = 14-8.56 = 5.44

       POH = PKb + log[B]/[BH+]

        5.44     = Pkb + log0.1404/0.0832

       5.44      = Pkb +0.2272

      Pkb      = 5.44-0.2272

                   = 5.2128

After addition of 0.02moles of Ba(OH)2

no of moles of base B   = 0.0832+0.02 = 0.1032moles

no of moles of conjugate acid BH+ = 0.1404-0.02 = 0.1204 moles

   PoH   = Pkb + log[BH+]/[B]

             = 5.2128+ log0.1204/0.1032

              = 5.2128+0.06694   = 5.2797 >>>>answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Finance
1.2K views

Your boss has asked you to analyze a potential new product, and to recommend if the...

Finance
1.2K views

The Hastings Sugar Corporation has the following pattern of net income each year, and associated capital...

Psychology
1.2K views

Briefly explain how reproductive technologies are becoming increasingly sophisticated, allowing parents to choose the sex of the...

Basic Math
1.2K views

People drive on average 14 058 miles per year About how many miles each week...

Statistics
1.2K views

T ain c Your answer is incorrect Empirical research on stock market data indicates tha

Calculus
1.2K views

R is the region bounded by the functions f(x) = (5x/2)-2 and g(x) = x...

Calculus
1.2K views

v 10 000 1 000t Which of the following is an equation of the line...

Algebra
1.2K views

The sum of two integers is 298 and the larger number is 25 more than...

Algebra
1.2K views

472 The equation below can be used to model the height of a tide in...

Accounting
1.2K views

! Required information [The following information applies to the questions displayed below.] ...

Accounting
1.2K views

a. A companys merchandise inventory account at the end of the year has...

Accounting
1.2K views

What is the description and introduction to Financial and Managerial Accounting? What are there differences?