Question

What is the concentration of \( \text{H}^+ \) ions if the pH is 2.7?

• A. \( 2.00 \times 10^{-3} \, \text{M} \)
• B. \( 1.99 \times 10^{-3} \, \text{M} \)
• C. \( 1.80 \times 10^{-3} \, \text{M} \)
• D. None of the above

Hint:

To calculate \( [\text{H}^+] \) from pH, use the formula \( [\text{H}^+] = 10^{-\text{pH}} \). Ensure the pH value is correctly substituted.