MHT CET Medical202622 April 2026Morning ShiftChemistryIonic EquilibriumActual
Calculate the percent dissociation of a weak mono-acidic base if its concentration is 0.02 M. [ K _b for weak mono-acidic base = 1.8 10⁻⁵ ]
Options
- A4 %
- B2 %
- C3 %
- D5 %
Correct answer
C. 3 %
Step-by-step solution
For a weak mono-acidic base, the degree of dissociation is given by the formula: = K_b C Substituting the given values: K_b = 1.8 10⁻⁵ C = 0.02 M = 1.8 10⁻⁵ 0.02 = 9 10⁻⁴ = 3 10⁻² Percent dissociation = 100 = 3 10⁻² 100 = 3 % Answer: 3 %