Which of the following are true statements for the given compound in aqueous solution ?

Question

Which of the following are true statements for the given compound in aqueous solution ?

a) NH3 : A Bronsted base, but not a Lewis base

b) OH - : A Bronsted base and a Lewis base

c) CH3COOH : A Lewis acid, but not a Bronsted acid

d) Cr 3+(aq) : A Lewis acid, but not a Bronsted acid

e) CH3CH2CH2CH3 : Both a Bronsted acid and a Lewis acid

Answer 1

Look for electron pair behaviour (Lewis) and proton behaviour B-L).

b and d are true.

Answer 2

A Bronsted base is maximum oftentimes seen a substance which could settle for protons (hydrogen ions), at the same time as a Lewis base is any molecule or ion which could form a clean coordinate covalent bond, by employing donating a pair of electrons. So a) is real ammonia can settle for a proton and would donate apair of electrons. in comparison to a Brønsted-Lowry acid, which continually transfers a hydrogen ion (H+), a Lewis acid would be any electrophile (including H+). even with the undeniable fact that each physique Brønsted-Lowry acids are Lewis acids, in uncomplicated utilization the term Lewis acid is often reserved for those Lewis acids that are no longer Brønsted-Lowry acids. in comparison to a Brønsted-Lowry acid, which continually transfers a hydrogen ion (H+), a Lewis acid would be any electrophile (including H+). even with the undeniable fact that each physique Brønsted-Lowry acids are Lewis acids, in uncomplicated utilization the term Lewis acid is often reserved for those Lewis acids that are no longer Brønsted-Lowry acids. b) in uncomplicated utilization hi is a Brønsted-Lowry acid and hence no longer seen as a Lewis acid (even with the undeniable fact that it particularly is). Sp it particularly is real. c) Acetic acid can donate a proton and so it particularly is a Brønsted-Lowry acid and so this is fake. d) Copper Ion can't donate a proton, so this is fake. e) butane can't donate a proton, so this is fake. precis a and b are real, at the same time as c, d and e are fake.