Question

Mm 2mCOO 19. Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x (3 points) 10-11 mol/L. Is this solution acididc, basic, or neutral? Show your work.

Answer 1

Answer: The hydrogen-ion concentration for the aqueous solution is
`10^(-3)mol/L` and solution is acidic.

Step-by-step explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration and pOH is calculated by taking negative logarithm of hydroxyl ion concentration.

`pOH=-\log [OH^-]`

Putting in the values:

`pOH=-\log[1* 10^(-11)]`

`pOH=11`

`pH+pOH=14`

\
`pH=14-11=3`

`pH=-log[H^+]`

`3=-log[H^+]`

`[H^+]=10^(-3)M`

As pH is less than 7, the solution is acidic.