CHEMISTRY - please can you define these please? Brønsted base...Lewis acid & Conjugate base?

Question

Please can you define these please and help mee!!

Brønsted base...Lewis acid & Conjugate base???

Answer 1

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A Brønsted-Lowry Base is a substance or solution that is a proton acceptor.

A Brønsted-Lowry Acid is a substance or solution that is a proton donor.

A Lewis Acid is a substance that can accept a lone pair to complete its electron configuration.

H+ is an example of a Lewis Acid.

I'm not sure on a Conjugate Base, but a quick Google search return this definition:

A conjugate base is the base member, X-, of a pair of compounds that transform into each other by gaining or losing a proton. The conjugate base gains or absorbs a proton in a chemical reaction.

This information came from here: http://chemistry.about.com/od/chemistryglossary/g/...