Question

Gaseous methylamine, CH3NH2, can be classified as __________.(a) a Lewis base only(b) Arrhenius and Brønsted-Lowry bases(c) a Brønsted-Lowry base only(d) Arrhenius and Lewis bases(e) Brønsted-Lowry and Lewis bases

Answer 1

Answer:

E. Brønsted-Lowry and Lewis bases.

Explanation:

An Arrhenius base is a molecule that when dissolved in water will break down to yield an OH- or hydroxide in solution.

Bronsted-Lowry base refers to any atom or ion capable of accepting or bonding to a free proton in solution.

Lewis Base is an electron pair donor. Also, it is a molecule that attacks another atom with its eldctron is an electron pair donor and a Lewis Base.

So according to the Lewis acid-base concept, amines can donate an electron pair, so they are Lewis bases. Also, Brønsted-Lowry bases can accept a proton to form substituted ammonium ions. So, amines are bases according to both the Lewis and the Brønsted-Lowry base.