The solubility product of ${\mathrm{Ag}}_2{\mathrm{CrO}}_4 \mathrm{is} 32 \times {10}^{-12}$. What is the concentration of ${\mathrm{CrO}}_4^{2-}$ ions in that solution?

• $2 \times {10}^{-4}$

• $16 \times {10}^{-4}$

• $8 \times {10}^{-4}$

• $12\times {10}^{-4}$

Conjugate acid-base pair differ by

• electron

• proton

• neutron

• hydroxyl group

Which is not an example of common ion effect?

• NaCl+ AgCl

• H₂S+ HCl

• CH₃COOH+ NaOH

• NH₄OH+ NH₄Cl

NH₄Cl is acidic due to

• cationic hydrolysis

• anionic hydrolysis

• its ionic nature

• pH > 7

An acid solution of pH = 6 is diluted 1000 times, the pH of the final solution becomes

• 6.01

• 9

• 3.5

• 6.99

The conjugate acid of HS^- is

• S^2-

• H₂S

• Both (a) and (b)

• None of these

Which of the following is a weak acid?

• C₆H₆

• CH₃COOH

• CH₂=CH₂

• CH₃COCH₃

The hydrogen ion concentration of a solution is 3.98 × 10^-6 mole per liter. The pH value of this solution will be

• 6.0

• 5.8

• 5.4

• 5.9

The solution of BiCl₃ in dil. HCI when diluted with water, white precipitate is formed which is

• Bismith oxychloride

• Bismith oxide

• Bismith hydroxide

• None of the above

The strongest acid is

• acetic acid

• trichloroacetic acid

• dichloroacetic acid

• monochloroacetic acid