Question

The concentration of hydroxide ions [oh–] in a solution is 8.4 × 10–5m. this solution is _____.

Answer 1

I believe the solution is a basic solution.


Good luck!

Answer 2

Answer: basic

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. Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH equal to 7.

$pH=-\log [H^+]$

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

Putting in the values:

$pOH=-\log[8.4\times 10^{-5}]$

$pOH=4.1$

$pH+pOH=14$

$pH=14-4.1=9.9$

Thus as pH is more than 7, the solution is basic.