Calculate the concentration of hydrogen ion in the acidic solution with `pH`
a. `4.3`

Explanation

To calculate the concentration of hydrogen ions \([H^+]\) in an acidic solution with a given pH of 4.3, we can follow these steps:

### Step 1: Understand the relationship between pH and hydrogen ion concentration
The pH of a solution is defined as:
\[ \text{pH} = -\log[H^+] \]
This means that to find the concentration of hydrogen ions, we can rearrange this equation.
...