Which of the following is a Lewis base? A) AlCl₃ B) H₂O C) SiCl₄ D) C₅H₁₂ E) None of the above are Lewis bases.

Question

Quizplus · Accepted Answer

A Lewis base is a molecule or ion that donates a pair of electrons to form a covalent bond. In option B, the sulfur atom has a lone pair of electrons and can donate these electrons to form a bond. In option A, aluminum and chlorine do not have any lone pairs to donate, and in option C, silicon and chlorine do not have any lone pairs available for donation. In option D, both carbon and sulfur have lone pairs, but they also have a positively charged hydrogen atom, indicating that they are more likely to act as an acid than a base. Therefore, option B is the best choice for a Lewis base.

Which of the Following Is a Lewis Base