Consider the following acids:
I. HCN
II. CH3COOH
III. HCOOH
IV. Cl-CH2COOH
The correct order of strength is
1. II>III>I>IV
2. IV>II>III>I
3. IV>III>II>I
4. III>II>IV>I
The hydrogen ion concentration is 0.2 M ethanoic acid is approximately
1.
2.
3.
4.
The pH of a solution made by mixing 50 mL of 0.01 M barium hydroxide solution with 50 mL of H2O is
1. | 3.0 | 2. | 6.0 |
3. | 12.0 | 4. | 15.0 |
Find the molar solubility of Fe(OH)3 in a buffer solution that 0.10 M in NH4Cl and 0.10 M in NH3. If and
1.
2.
3.
4.
A base dissolved in water yields a solution with a hydroxyl ion concentration of 0.05 mol litre-1. The solution is
1. basic
2. acid
3. neutral
4. either 2 or 3
Ionization constant of CH3COOH is and concentration of H+ ion is . Then initial concentration of CH3COOH is
1.
2.
3.
4.
At the dissociation constant of a base, BOH is , the concentration of hydroxyl ions 0.01 M aqueous solution of the base would become
1.
2.
3.
4.
The solubility product of AgI at is . The solubility of AgI in 10-4 N solution of KI at is : (in mol L-1)
1.
2.
3.
4.
When 0.1 mole of CH3NH2 (ionization constant ) is mixed with 0.08 mol HCl and the volume is made up of 1 litre. The [H+] of resulting solution is -
(log 4 = 0.60)
1.
2.
3.
4.
The solution with pH value close to 1.0 among the following is:
1. | 100 ml of (M/10) HCl + 100 ml of (M/10) NaOH |
2. | 55 ml of (M/10) HCl + 45 ml of (M/10) NaOH |
3. | 10 ml of (M/10) HCl + 90 ml of (M/10) NaOH |
4. | 85 ml of (M/10) HCl + 15 ml of (M/10) NaOH |