Phosphorous acid, H3PO3(aq), is a diprotic oxyacid that is an important compound in industry and agriculture. Calculate...

70.2K

Verified Solution

Question

Chemistry

Phosphorous acid, H3PO3(aq), is a diprotic oxyacid that is animportant compound in industry and agriculture.
Calculate the pH for each of the following points in thetitration of 50.0 mL of a 1.5 M H3PO3(aq) with 1.5 M KOH(aq).
pKa1= 1.30
pKa2= 6.70
(a) before addition of any KOH =_number
(b) after addition of 25.0 mL of KOH = number
(c) after addition of 50.0 mL of KOH = number
(d) after addition of 75.0 mL of KOH =_number
(e) after addition of 100.0 mL of KOH=____number
please explain how you got each! thanks so much
also this might help: For part (a), you only need to considerthe first ionization because Ka1 >> Ka2. Use pKa1 to find thevalue of Ka1, then solve for x.

Answer & Explanation Solved by verified expert

3.8 Ratings (440 Votes)

a before adding base Since pka1 pka2 the pH of the acid is calculated as a weak monoprotic acid that is pH 12pKa1 12 log concentration 12 x13 12 log15 05619 b When base is added the reaction is H3PO3 KOH KH2PO3 H2O 50x15 x2 25x15 0 0 See 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