At 25 degrees Celsius an acidic solution has a hydronium ion molarity:
AAlways exactly zero
BGreater than 1.0e-7 M
CSmaller than 1.0e-7 M
DExactly 1.0e-7 M
Answer & Solution
Correct answer: B. Greater than 1.0e-7 M
1. Neutral water at this temperature holds hydronium at 1.0 times ten to the minus seven molar.
2. Acidic solutions are those with hydronium ion molarities greater than that figure.
3. Their hydroxide ion molarities are correspondingly less than 1.0 times ten to the minus seven molar.
4. That corresponds to pH values less than 7.00 and pOH values greater than 7.00.
_Source: OpenStax Chemistry 2e (CC BY 4.0), Ch 14 'Acid-Base Equilibria', sections 14.1-14.7_
Keep practising Acid-Base Equilibria
Browse all Acid-Base Equilibria questions for AP Chemistry, or explore more Chemistry topics.
Related questions
Complete the strength ruleSort each gas by the acid it makesTrue or false: acids and basesMatch each acid-base termAcidic or basic at 25 C?Bicarbonate demonstrates amphiprotic behaviour because it can react with water as:Gay-Lussac concluded that acids and bases can be defined:Unlike Ka, the percent ionization of a weak acid typically changes when: