Chemistry - Complete Pblock- Question with Solution | TestHub
Choose the correct statement(s).
Options:(select one or more)
Answer:
Solution:
Statement (A) is correct: NF₃ does not undergo hydrolysis under ordinary conditions due to the lack of d-orbitals on nitrogen and the lower polarity of the N–F bond. However, under forcing conditions (high temperature/alkaline), it undergoes hydrolysis via an Sɴ1 mechanism involving the formation of a nitrogen lone pair coordinated intermediate.
Statement (C) is correct: BeCl₂ undergoes hydrolysis via an Sɴ2 mechanism to initially produce Be(OH)₂, which is amphoteric. Because it is amphoteric, it dissolves in excess NaOH to form a soluble complex, sodium beryllate (Na₂[Be(OH)₄]).
Statement (B) is incorrect because SiF₄ undergoes faster hydrolysis due to a stronger thermodynamic driving force (forming highly stable fluorosilicate complexes), and (D) is incorrect because SbCl₃ hydrolyzes to form an oxychloride (SbOCl) white precipitate, not Sb(OH)₃.
