Question

The approximate molar concentration of several chemicals are given. Find the pH of each use the calculator and round to the nearest 10th if necessary. Here is the photo of the question

Answer 1

`pH = 13` --- Oven Cleaner

`pH = 6.2` --- Water

`pH =7.4` --- Blood

`pH = 2.2` --- Vinegar

Explanation:

The given molar concentration are:[Missing from the question]

Oven Cleaner: [h+] =
`10^(-13)`

Water: [h+] =
`0.0000007`

Blood: [h+] =
`0.00000004`

Vinegar: [h+] =
`0.0063`

Required

Determine the pH

pH is calculated using:

`pH = -\log(h+)`

So, we have:

Oven Cleaner:

`pH = -\log(10^(-13))`

Using a calculator, we have:

`pH = 13`

Water:

`pH = -\log(0.0000007)`

Using a calculator, we have:

`pH = -1*-6.2`

`pH = 6.2`

Blood:

`pH = -\log(0.00000004)`

Using a calculator, we have:

`pH = -1 * -7.4`

`pH =7.4`

Vinegar:

`pH = -\log(0.0063 )`

Using a calculator, we have:

`pH = -1 * -2.2`

`pH = 2.2`