1
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
Four species are listed below
i. $$HCO_3^−$$
ii. $$H_3O^+$$
iii. $$HSO_4^−$$
iv. $$HSO_3F$$
Which one of the following is the correct sequence of their acid strength?
A
iv < ii < iii < I
B
ii < iii < i < iv
C
i < iii < ii < iv
D
iii < i < iv < ii
2
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
The pKa of a weak acid, HA, is 4.80. The pKb of a weak base, BOH, is 4.78. The pH of an aqueous solution of the corresponding salt, BA, will be
A
9.58
B
4.79
C
7.01
D
9.22
3
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
The first and second dissociation constants of an acid H2A are 1.0 $$\times$$ 10−5 and 5.0 $$\times$$ 10−10 respectively. The overall dissociation constant of the acid will be :
A
5.0 $$\times$$ 10−5
B
5.0 $$\times$$ 1015
C
5.0 $$\times$$ 10−15
D
5.0 $$\times$$ 105
4
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
In a sautrated solution of the sparingly soluble strong electrolyte AgIO3 (Molecular mass = 283) the equilibrium which sets in is
AgIO3(s) $$\leftrightharpoons$$ Ag+(aq) + $$IO_3^-$$
If the solubility product constant Ksp of AgIO3 at a given temperature is 1.0 $$\times$$10−8, what is the mass of AgIO3 contained in 100 ml of its saturated solution?
A
28.3 × 10−2 g
B
2.83 × 10−3 g
C
1.0 × 10−7 g
D
1.0 × 10−4 g
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