# Question #f777d

Aug 28, 2017

A solution with a pH of 2 is 100 times acidic as a solution of pH 4

#### Explanation:

pH=2
Then, $- \log H 3 {O}^{+} = - \log {10}^{-} 2$
Concentration of $H 3 {O}^{+}$ = ${10}^{-} 2$
When pH =4
concentration of $H 3 {O}^{+} = {10}^{-} 4$
Therefore, ${10}^{-} \frac{2}{10} ^ - 4 = {10}^{2} = 100$
A solution with a pH of 2 is 100 times acidic as a solution of pH 4