Question

The concentrations of hydrogen ion in two solutions are (a).1×10-4moldm and (b).5×10-9moldm. What is the pH of each solutions?

Answer 1

(a) pH=4.0

(b) pH=8.3

Step-by-step explanation:

Hello there!

In this case, since the pH is understood as the potential of the hydrogen in an aqueous solution, and we can calculate it is as follows:

`pH=-log([H^+])`

We simply need to plug in the concentrations on each question as shown below:

(a)

`pH=-log(1x10^(-4))\\\\pH=4`

(b)

`pH=-log(5x10^(-9))\\\\pH=8.3`

Regards!