18.3.1 Lewis Acids and the Formation of Acid-Base Adducts Flashcards
When a molecule acts as a Lewis acid, it…
accepts a pair of electrons.
Boron, a nonmetal, which can form covalent compounds, is found in covalent hydrides called boranes. Boranes are extremely electron deficient and are highly reactive Lewis acids. Which borane is the simplest known hydride of boron?
B2H6
A molecule with the general structure X–O–H can behave either as an acid or as a base. Which factor will most likely result in a basic behavior rather than an acidic one?
An ionic X–O bond
Which acid-base model can account for the breaking and forming of bonds involving atoms other than hydrogen?
The Lewis model
Which of the following compounds will NOT act as a Lewis acid?
Carbon tetrachloride
Which of the following statements regarding acids and bases is false?
Weak acids, by definition, are not very reactive.
What is the general trend in electronegativity as you go down the periodic table?
it decreases
Which of the following accurately illustrates the correct Lewis structures of the NO3− ion?
none of the above
What term is used to describe a substance that can accept or donate a proton depending on the type of reactions?
Amphiprotic
