Question

What is the molar concentration of hydrogen ions in a solution of $ 0.1 \, \text{M} $ $ \text{HCl} $?

• A. \( 0.1 \, \text{M} \)
• B. \( 0.05 \, \text{M} \)
• C. \( 0.2 \, \text{M} \)
• D. \( 1 \, \text{M} \)

Hint:

Remember: Strong acids like \( \text{HCl} \) dissociate completely, so the concentration of hydrogen ions is equal to the concentration of the acid.