Question

The pH of a liquid is a measure of how acidic or basic it is. The concentration of hydrogen ions in a liquid is labeled [H+]. Use the formula pH = –log[H+] to find the pH level, to the nearest tenth, of a liquid with [H+] about 5.4 x 10–14.
A. 14.7B. 13.3C. 14.0D. -14.7

Answer 1

Answer:

option (b)

Step-by-step explanation:

Concentration of [H+} = 5.4 x 10^-14

According to the formula

pH = - log [H+]

$pH = - log[5.4\times 10^{-14}]$

$pH = - log[5.4] -log [10^{-14}]$

pH = 14 - log 5.4

pH = 14 - 0.732

pH = 13.3

Thus, the pH is 13.3

Answer 2

The pH level of the liquid is about 13.3

An equation is used to show the relationship between two or more variables.

Given the formula:

pH = –log[H+]

Where [H+] is the concentration of hydrogen ions in a liquid

For a concentration of [H+] = 5.4 x 10⁻¹⁴:

pH = –log[H+]

pH = –log(5.4 x 10⁻¹⁴)

pH = 13.3

Therefore the pH level of the liquid is about 13.3

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