Question

What is the ph of household ammonia in which the [h3o ] is 1.0x10-12 m?

Answer 1

Data:

`pH = ?`

`[ H_(3) O] = 1.0*10^(-12)`
The logarithm of number 1 on any basis will always be equal to 0, therefore: Log10 (1) = 0

Solving:

`pH = - log[ H_(3) O^+]`

`pH = -log1.0*10^(-12)`

`pH = 12 - log1.0`

`pH = 12 - 0`

`\boxed{\boxed{pH = 12}}\end{array}}\qquad\quad\checkmark`

Note: For pH greater than 7 indicates that the substance is basic (pH > 7)