0.1 M solution of which one of these substances will be basic ?
Sodium borate
Calcium nitrate
NH4CI
Sodium sulphate
The compound whose aqueous solution has the highest pH is
NaCI
NaHCO3
Na2CO3
At 25o C, the dissociation constant of a base, BOH is 1.0 × 10-12 . The concentration of hydroxyl ions in 0.01 M aqueous solution of the base would be
2.0 × 10-6 mol L-1
1.0 × 10-5 mol L-1
1.0 × 10-6 mol L-1
1.0 × 10-7 mol L-1
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
The pH value of blood does not change appreciably by a small addition of an acid or base, because the blood
is a body fluid
can be easily coagulated
contains iron as a part of the molecule
contains serum protein that acts as buffer
Calculate the pOH of a solution at 25oC that contains 1 ×10-10 M of hydronium ions.
7.00
4.00
9.00
1.00
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
Which of the following molecules act as a Lewis acid ?
(CH3 )3 B
(CH3 )2 O
(CH3 )3 P
(CH3 )3 N
Which has highest pH ?
CH3COOK
NaNO3
The rapid change of pH near the stoichiometric point of an acid base titration is the basis of indicator detection. pH of the solution is related to ratio of the concentrations of the conjugate acid (HIn) and base (In- ) forms of the indicator given by the expression
