An acid is a substance that increases the concentration of cap h sub 3 cap o raised to the plus power ions in solution. Look at the reaction of phenol open paren cap c sub 6 cap h sub 5 OH close paren with water: cap c sub 6 cap h sub 5 OH A q plus cap h sub 2 cap o l rightarrow cap c sub 6 cap h sub 5 cap o raised to the negative A q power plus cap h sub 3 cap o raised to the plus A q power Which reactant acts as an acid by contributing a cap h raised to the plus power ion to create cap h sub 3 cap o raised to the plus power in the chemical equation?
Answer
A
cap c sub 6 cap h sub 5 OH A q
B
cap h sub 3 cap o raised to the plus A q power
C
cap c sub 6 cap h sub 5 cap o raised to the negative A q power
D
cap h sub 2 cap o l
Explanation
Phenol, C₆H₅OH, transfers an H⁺ ion to water in this reaction. Water gains that ion and becomes H₃O⁺, so phenol is the reactant acting as the acid. The correct choice is C₆H₅OH(aq).
AI-written and checked against the verified answer.