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JEE Advanced 2021 Full Test 2 Paper 2

PART – II

Chemistry

SECTION – A (One or More than one correct type)This section contains 06 multiple choice questions. Each question has FOUR options (A), (B), (C) and (D). ONE OR MORE THAN ONE of these four options is(are) correct.

Question : 23

Total: 54

H2A is a weak diprotic acid. If the pH of 0.1M H2 A solution is 3 and concentration of A2− is 10−12 at 25°C.
Select correct statement(s)

[H+]total ≈[H+] from first step of ionization of acid H2A
Concentration of OH− in solution is 10−3M
The value of Ka1 is nearly 10−5
pKa2−pK1=9

Validate

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