The Bronsted acidity of boron hydrides follows the order · ABC26IN0500
Subject: Inorganic Chemistry · Chapter: Organometallic Compounds · Topic: Organometallic Compounds – General · Exam: GATE 2005-2021 · Marks: 2 · Difficulty: Easy
The Bronsted acidity of boron hydrides follows the order
(a)$\mathrm{B}_{2} \mathrm{H}_{6}>\mathrm{B}_{4} \mathrm{H}_{10}>\mathrm{B}_{5} \mathrm{H}_{9}>\mathrm{B}_{10} \mathrm{H}_{14}$
(b)$\mathrm{B}_{2} \mathrm{H}_{6}=\mathrm{B}_{4} \mathrm{H}_{10}>\mathrm{B}_{5} \mathrm{H}_{9}=\mathrm{B}_{10} \mathrm{H}_{14}$
(c)$\mathrm{B}_{10} \mathrm{H}_{14}>\mathrm{B}_{5} \mathrm{H}_{9}>\mathrm{B}_{4} \mathrm{H}_{10}>\mathrm{B}_{2} \mathrm{H}_{6}$
(d)$\mathrm{B}_{5} \mathrm{H}_{9}>\mathrm{B}_{4} \mathrm{H}_{10}>\mathrm{B}_{2} \mathrm{H}_{6}>\mathrm{B}_{10} \mathrm{H}_{14}$
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
Brønsted acidity of boranes increases with cluster size: B₁₀H₁₄ > B₅H₉ > B₄H₁₀ > B₂H₆ (c).
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