Question

The pH of a solution is measured as 4.5. What is the hydrogen ion concentration of the solution?

Answer 1

The hydrogen ion concentration of a solution with a pH of 4.5 is approximately 3.16 x 10^(-5) M.

Step-by-step explanation:

The pH of a solution is a measure of the concentration of hydrogen ions (H+) in the solution. It is calculated using the formula pH = -log[H+]. In this case, the pH of the solution is 4.5, so we can calculate the hydrogen ion concentration as follows:

pH = -log[H+]
4.5 = -log[H+]

Now, we can rearrange the equation to solve for [H+]:
-4.5 = log[H+]

Next, we can take the antilog of both sides to get rid of the logarithm:
10^(-4.5) = [H+]

Using a calculator, we find that [H+] is approximately 3.16 x 10^(-5) M. Therefore, the hydrogen ion concentration of the solution is 3.16 x 10^(-5) M.

Answer 2

[H⁺] = 3.16 × 10⁻⁵ mol/L

Step-by-step explanation:

Given data:

pH of solution = 4.5

Hydrogen ion concentration = ?

Solution;

pH = -log [H⁺]

we will rearrange this formula:

[H⁺] = 10∧-pH

[H⁺] = 10⁻⁴°⁵

[H⁺] = 3.16 × 10⁻⁵ mol/L