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)
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
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