Answer: A substance with a pH of 2 has a 10 times higher concentration of H+ than a substance with a pH of 3.
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration and pOH is calculated by taking negative logarithm of hydroxide ion concentration.
\(pH=-\log [H^+]\)
\(pOH=-log{OH^-}\)
\(pH+pOH=14\)
Given: pH=2
\(2=-log[H^+]\)
\([H^+]=10^{-2}M\)
pH=3
\(3=-log[H^+]\)
\([H^+]=10^{-3}M\)
A substance with a pH of 2 has a 10 times higher concentration of H+ than a substance with a pH of 3.
