MHT CET202411 May 2024Morning ShiftChemistryIonic EquilibriumActual
A monobasic acid is 5 % dissociated in its 0.02 M solution. Calculate the dissociation constant of acid.
Options
- A2 10⁻²
- B4 10⁻⁴
- C5 10⁻⁵
- D2.5 10⁻⁴
Correct answer
C. 5 10⁻⁵
Step-by-step solution
aligned & = Percent dissociation 100 = 5 100 =5 10⁻² & c=0.02 M =2 10⁻² M aligned Using formula, K _ a = ^2 c K _ a = (5 10⁻² )^2 2 10⁻²=5.0 10⁻⁵