Question
The solubility product of sparingly soluble salt BA is 4 10^ -13 . Calculate the [ A ^-] if [ B ^+] is 1 10^ -6 \ M .
MHT CET
Chemistry
Ionic Equilibrium
2026
MHT CET 2026 (16 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 2 10^ -7 \ M
- B. 3 10^ -7 \ M
- C. 4 10^ -7 \ M
- D. 5 10^ -7 \ M
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
Related: Chemistry — Ionic Equilibrium · All PYQ Banks