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Chemistry · PYQ NEET UG 2019(1)

हिन्दी

Conjugate bases for Bronsted acids \( \text{H}_2\text{O} \) and \( \text{HF} \) are _________, respectively.

  1. \( \text{H}_3\text{O}^+ \) and \( \text{F}^- \), respectively
  2. \( \text{OH}^- \) and \( \text{F}^- \), respectively
  3. \( \text{H}_3\text{O}^+ \) and \( \text{H}_2\text{F}^+ \), respectively
  4. \( \text{OH}^- \) and \( \text{H}_2\text{F}^+ \), respectively

Correct answer · Option 2

\( \text{OH}^- \) and \( \text{F}^- \), respectively

Explanation

The conjugate base of an acid is formed by removing a proton (\( \text{H}^+ \)). Removing \( \text{H}^+ \) from \( \text{H}_2\text{O} \) gives \( \text{OH}^- \), and from \( \text{HF} \) gives \( \text{F}^- \).
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