1
JEE Main 2022 (Online) 27th June Evening Shift
Numerical
+4
-1
Change Language

pH value of 0.001 M NaOH solution is ____________.

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2
JEE Main 2022 (Online) 26th June Morning Shift
Numerical
+4
-1
Change Language

50 mL of 0.1 M CH3COOH is being titrated against 0.1 M NaOH. When 25 mL of NaOH has been added, the pH of the solution will be _____________ $$\times$$ 10$$-$$2. (Nearest integer)

(Given : pKa (CH3COOH) = 4.76)

log 2 = 0.30

log 3 = 0.48

log 5 = 0.69

log 7 = 0.84

log 11 = 1.04

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3
JEE Main 2021 (Online) 1st September Evening Shift
Numerical
+4
-1
Change Language
The molar solubility of Zn(OH)2 in 0.1 M NaOH solution is x $$\times$$ 10$$-$$18 M. The value of x is _________ (Nearest integer)

(Given : The solubility product of Zn(OH)2 is 2 $$\times$$ 10$$-$$20)
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4
JEE Main 2021 (Online) 31st August Evening Shift
Numerical
+4
-1
Change Language
The pH of a solution obtained by mixing 50 mL of 1 M HCl and 30 mL of 1 M NaOH is x $$\times$$ 10$$-$$4. The value of x is ____________. (Nearest integer) [log 2.5 = 0.3979]
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