Question
What is the pH of a 1 * 10to the power of -4 mol HCI solution?
8
4
6
2
8
4
6
2
Answers
GPT-4o mini
To calculate the pH of a hydrochloric acid (HCl) solution, you can use the formula:
\[
\text{pH} = -\log[\text{H}^+]
\]
In this case, the concentration of HCl is \(1 \times 10^{-4}\) mol/L, which means:
\[
[\text{H}^+] = 1 \times 10^{-4} \text{ mol/L}
\]
Now, plug this value into the pH formula:
\[
\text{pH} = -\log(1 \times 10^{-4}) = 4
\]
So the pH of the solution is **4**.
Thus, the correct answer is **4**.
\[
\text{pH} = -\log[\text{H}^+]
\]
In this case, the concentration of HCl is \(1 \times 10^{-4}\) mol/L, which means:
\[
[\text{H}^+] = 1 \times 10^{-4} \text{ mol/L}
\]
Now, plug this value into the pH formula:
\[
\text{pH} = -\log(1 \times 10^{-4}) = 4
\]
So the pH of the solution is **4**.
Thus, the correct answer is **4**.