Formic Acid, Which Is a Component of Insect Venom, Has

question 41

Multiple Choice

Formic acid, which is a component of insect venom, has a K_a = 1.8 × 10⁻⁴. What is the [H₃O⁺] in a solution that is initially 0.10 M formic acid, HCOOH?

• A)4.2 × 10 ⁻³ M
• B)8.4 × 10 ⁻³ M
• C)1.8 × 10 ⁻⁴ M
• D)1.8 × 10 ⁻⁵ M
• E)1.8 × 10 ⁻⁶ M

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