pH of a solution having hydrogen ion concentration of 1 M is

Options

A. 0
B. 1
C. 10
D. 14

Explanation

To find the pH of a solution with a hydrogen ion concentration of 1 M, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the pH Formula**:
The pH of a solution is calculated using the formula:
\[ \text{pH} = -\log[H^+] \]
where \([H^+]\) is the concentration of hydrogen ions in moles per liter.

2. **Identify the Given Concentration**:
In this problem, the hydrogen ion concentration \([H^+]\) is given as 1 M (1 mole per liter).

3. **Substitute the Value into the Formula**:
Now, substitute the value of \([H^+]\) into the pH formula:
\[ \text{pH} = -\log(1) \]

4. **Calculate the Logarithm**:
We know that the logarithm of 1 is 0:
\[ \log(1) = 0 \]

5. **Calculate the pH**:
Now, substitute the value of the logarithm back into the pH equation:
\[ \text{pH} = -0 = 0 \]

6. **Conclusion**:
Therefore, the pH of the solution with a hydrogen ion concentration of 1 M is:
\[ \text{pH} = 0 \]

### Final Answer:
The pH of the solution is **0**.