The solubility product of CuS ,CdS and HgS are 10-31 , 10-44 , 10-54 , respectively.The solubility of these sulphides are in the order of
CdS > HgS > CuS
HgS > CdS > CuS
CdS > CuS > HgS
CuS > CdS >HgS
The pH value of a 10 M solution of HCl is
less than 0
Equal to 0
Equal to 1
Equal to 2
The solubility of a saturated solution of calcium fluoride is 2×10-4 mol / L . Its solubility product is,
12×10-2
14×10-4
22×10-11
32×10-12
At constant temperature, the equilibrium constant (K p) for the decomposition reaction,
where , p= pressure, x= extent of decomposition. Which one of the following statement is true?
K p increases with increase of p
K p increases with increase of x
K p increases with decrease of x
Kp remains constant with change in p and x
The pH of 0.1 M solution of a weak acid is 3. What is the value of the ionization constant for the acid?
0.1
10-3
10-5
10-7
The pKα of a weak acid, HA is 4.80. The Kb of a weak base BOH is 4.78. The pH of an aqueous solution of the corresponding salt BA , will be
7.01
9.22
9.58
4.79
The solubility product of a salt having general formula MX2 , in water is 4 × 10-12 . The concentration of M2+ ions in the aqueous solution of the salt is
4.0 × 10-10 M
1.6 × 10-4 M
1.0 × 10-4 M
2.0 × 10-6 M
Solubility product constant (Ksp) of salts of types MX , MX2 and M3X at temperature ' T ' are 4.0 × 10-8 , 3.2 × 10-14 and 2.7 × 10-15 respectively. Solubilities (mol dm-3) of the salts at temperature ' T ' are in the order
MX > MX2 > M3X
M3X > MX2 > MX
MX2 > M3X > MX
MX > M3X > MX2
The solubility of sparingly soluble salt, AB2 in water is 1.0 × 10-5 mol L-1 .Its solubility product will be
4 × 10-10
1 × 10-15
1 × 10-10
4 × 10-15
0.1 mole of CH3NH2 (Kb = 5 × 10-4 ) is mixed with 0.08 mole of HCl and diluted to one litre. What will be the H+ concentration in the solution?
8 × 10-2 M
8 × 10-11 M
1.6 × 10-11 M
8 × 10-5 M
