Posted by Sean on .
Methylamine (CH3NH2) forms hydroxide ions in aqueous solution. Why is methylamine a Brønsted-Lowry base but not an Arrhenius base?
I need help on this question. Please explain this to me!
The old definition of an Arrhenius base was that the substance contained hydroxide ion.Under that definition CH3NH2 is not a base because it doesn't contain OH ions. However, the definition has been modified to make it fit more modern times. Frankly, I consider CH3NH2 an Arrhenius base, too, because the modified definition of an Arrhenius base is one that produces OH^- in solution and CH3NH2 does just that.