The Following Equilibrium Is Established in Water Solution

question 84

Multiple Choice

The following equilibrium is established in water solution:
HCOOH + H₂O→HCOO ^- + H₃O⁺ K _a = 1.8×10 ^{- 4} Which of the following is false?

• A) HCOO ^- is the conjugate acid of HCOOH.
• B) H₂O is the conjugate base of H₃O⁺.
• C) HCOOH is a weak acid.
• D) H₂O is a weak base.
• E) Hydroxide concentration is negligible with respect to hydrogen ion concentration.

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