0.1 M solution of which one of these substances will be basic ?
Sodium borate
Calcium nitrate
NH4CI
Sodium sulphate
Solubility of a M2 S type salt is 3.5 × 10-6 , then find out its solubility product.
1.7 × 10-6
1.7 × 10-16
1.7 × 10-18
1.7 × 10-12
The conjugate acid of is
N2H4
NH2OH
NH3
Ionisation constant of CH3COOH is 1.7 × 10-5 and concentration of H+ ions is 3.4 × 10-4. Then, find out initial concentration of CH3COOH molecules.
3.4 × 10-4
3.4 × 10-3
6.8 × 10-4
6.8 × 10-3
Which one of the following is true for any diprotic acid, H2 X ?
Which of the following pairs constitutes a buffer ?
HNO2 and NaNO2
NaOH and NaCI
HNO3 and NH4NO3
HCI and KCI
Equal volumes of three acid solutions of pH 3,4 and 5 are mixed in a vessel. What will be the H+ ion concentration in the mixture ?
1.11 × 10-4 M
3.7 × 10-4 M
3.7 × 10-3 M
1.11 × 10-3 M
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.
CdS > HgS > CuS
HgS > CdS > CuS
CdS > CuS > HgS
CuS > CdS > HgS
The hydrogen ion concentration of a 10-8 M HCI aqueous solution at 298 K (K = 10-14 ) is
1.0 × 10-6 M
1.0525 × 10-7 M
9.525 × 10-8 M
1.0 × 10-8 M
The concentration of [H+ ] and concentration of [OH-] of a 0.1 M aqueous solution of 2% ionised weak mono basic acid is
[ionic product of water = 1× 10-14 ]
0.02 × 10-3 M and 5 × 1011 M
1 × 10-3 M and 3 × 1011 M
2 × 10-3 M and 5 × 1012 M
3 × 10-2 M and 4 × 10-13 M
