1
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
The pKa of a weak acid (HA) is 4.5. The pOH of an aqueous buffered solution of HA in which 50% of the acid is ionized is :
A
7.0
B
4.5
C
2.5
D
9.5
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The solubility product of a salt having general formula MX2, in water is: 4 $$\times$$ 10-12 . The concentration of M2+ ions in the aqueous solution of the salt is :
A
2.0 $$\times$$ 10-6 M
B
4.0 $$\times$$ 10-10 M
C
1.0 $$\times$$ 10-4 M
D
1.6 $$\times$$ 10-4 M
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
What is the conjugate base of OH-?
A
O2
B
H2O
C
O-
D
O-2
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Hydrogen ion concentration in mol / L in a solution of pH = 5.4 will be :
A
3.98 $$\times$$ 10-6
B
3.68 $$\times$$ 10-6
C
3.88 $$\times$$ 106
D
3.98 $$\times$$ 108
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