Question

Acidity is measured on the pH scale. The acidity of a substance is given by pH=−logH, where H is the concentration of Hydrogen ions.
If a substance has a pH of 7, what is its H value?

If necessary, include a leading 0 with any decimals less than 1. For example, 0.5 instead of .5.

Answer 1

Answer:

$H = 0.0000001$

Step-by-step explanation:

The acidity is:

pH = -logH

If a substance has a pH of 7, what is its H value?

This means that pH = 7, we have to find h.

$-\log{H} = 7$

$\log{H} = -7$

We apply the following logarithm property:

$10^{\log{a}} = a$

So

$10^{\log{H}} = 10^{-7}$

$H = 0.0000001$