Question
If [ H _3 O ^+] of a solution is 1 10^ -4 . What is the value of pOH at 298\, K ?
MHT CET
Chemistry
Ionic Equilibrium
2026
MHT CET 2026 (19 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 4
- B. 10
- C. 12
- D. 14
Answer
B. 10
Step-by-step solution
Given [ H _3 O ^+] = 1 10^ -4 M. The pH of the solution is given by: pH = - [ H _3 O ^+] pH = - (1 10^ -4 ) = 4 At 298\, K , the relationship between pH and pOH is: pH + pOH = 14 Substituting the value of pH: 4 + pOH = 14 pOH = 10 Answer: 10
Related: Chemistry — Ionic Equilibrium · All PYQ Banks