Questions
H2A is a weak diprotic acid. If the pH of 0.1 M H2A solution is 3 and concentration of A2- is 10-12 at 25°C. Select correct statement(s)
Unlock the full solution & master the concept.
Get a detailed solution and exclusive access to our masterclass to ensure you never miss a concept
By Expert Faculty of Sri Chaitanya
a
H+Total ≈H+from first step of ionization of acid H2A
b
Concentration of -OH in solution is 10−3M
c
The value of Ka1 is nearly 10−5
d
pKa2−pK1=9
Ready to Test Your Skills?
Check Your Performance Today with our Free Mock Tests used by Toppers!detailed solution
Correct option is A
H2A⇌H++HA−∵y is very less so x+y≈x∴Ka1=x2c−xAt equilibrium C- X x+y x−y Ka2=y=10−12;pKa2=12HA−1⇌H++A2− at equilibrium x−y x+y ypKa2−pKa1=12−5=7pH=12pKa1−logC3=12pKa1+1pKa1=5Similar Questions
Milliequivalent of Ba(OH)2 present in 100 mL solution to have pH = 13, is
Get your all doubts cleared from
Sri Chaitanya experts
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
free study material
JEE
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests
Popular Books
HC Verma Part 1HC Verma Part 2RS AgarwalRD SharmaLakhmir SinghDK GoelSandeep GargTS GrewalNCERT solutions
Class 12 NCERT SolutionsClass 11 NCERT SolutionsClass 10 NCERT SolutionsClass 9 NCERT SolutionsClass 8 NCERT SolutionsClass 7 NCERT SolutionsClass 6 NCERT Solutions
