Question Bank › Inorganic Chemistry › Main Group Elements › ABC26IN0197ABC26IN0197 · Main Group Elements Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Hydrides · Exam: CSIR-NET 2015 · Marks: 2 · Difficulty: Hard
The order of increasing Bronsted acidity for boron hydrides is
(a) $\mathrm{B}_{5} \mathrm{H}_{9}<\mathrm{B}_{6} \mathrm{H}_{10}<\mathrm{B}_{10} \mathrm{H}_{14}$
(b) $\mathrm{B}_{10} \mathrm{H}_{14}<\mathrm{B}_{5} \mathrm{H}_{9}<\mathrm{B}_{6} \mathrm{H}_{10}$
(c) $\mathrm{B}_{6} \mathrm{H}_{10}<\mathrm{B}_{10} \mathrm{H}_{14}<\mathrm{B}_{5} \mathrm{H}_{9}$
(d) $\mathrm{B}_{10} \mathrm{H}_{14}<\mathrm{B}_{6} \mathrm{H}_{10}<\mathrm{B}_{5} \mathrm{H}_{9}$
Answer Explanation Acidic strength of boranes depends upon (i) number of boron atoms (ii) decapping. Hence, the correct order of acidity is $\mathrm{B_5H_9} < \mathrm{B_6H_{10}} < \mathrm{B_{10}H_{14}}$.
← Previous in chapter · Chapter list · Next in chapter → Open in whiteboard · Browse this chapter in the app