KVPY2018ChemistryIonic Equilibrium
If the H + concentration of an aqueous solution is 0 . 001 M , , then the pOH of the solution would be
Options
- A0 . 001
- B  0 . 999
- C3
- D11
Correct answer
D. 11
Step-by-step solution
The H   + ion concentration of an aqueous solution is 0 . 001 M or 1 × 10 - 3 M Since. we know that pH = - log H + Using this equation, by plugging in the values pH = - log 10 - 3 = - ( - 3 )   log 10 = 3 pH = 3 We know that pOH = 14 - pH = 14 - 3 = 11 ∴    pOH = 11