A Solution Is an Acid If Its PH Is Less $6.3$

Multiple Choice

A solution is an acid if its pH is less than 7 and a base if its pH is greater than 7. The pH is defined by pH = -log10[H+],
where [H+] is the concentration of hydrogen ions in the solution. Use this information to answer the question
-A mixture has a pH of $6.3$ . Find the concentration of hydrogen ions $\left[ \mathrm { H } ^ { + } \right]$ in the mixture. Is the mixture an acid or a base?

A) $10 ^ { 6.3 }$ , base
B) $10 ^ { 6.3 }$ , acid
C) $10 ^ { - 6.3 }$ , acid
D) $10 ^ { - 6.3 }$ , base