MHT CET202616 April 2026Evening ShiftChemistryIonic EquilibriumActual
The solubility product of sparingly soluble salt BA is 4 10⁻¹³ . Calculate the [ A ^-] if [ B ^+] is 1 10⁻⁶ M .
Options
- A2 10⁻⁷ M
- B3 10⁻⁷ M
- C4 10⁻⁷ M
- D5 10⁻⁷ M
Correct answer
C. 4 10⁻⁷ M
Step-by-step solution
The dissociation of the sparingly soluble salt BA is given by: BA B ^+ + A ^- The solubility product expression is: K_ sp = [ B ^+][ A ^-] Given: K_ sp = 4 10⁻¹³ [ B ^+] = 1 10⁻⁶ M Substituting the given values into the expression: 4 10⁻¹³ = (1 10⁻⁶) [ A ^-] [ A ^-] = 4 10⁻¹³ 1 10⁻⁶ [ A ^-] = 4 10⁻⁷ M Answer: 4 10⁻⁷ M