Acids, Buffers, Enthalpy and Entropy Flashcards Preview

Chemistry OCR 2015 Onwards > Acids, Buffers, Enthalpy and Entropy > Flashcards

Flashcards in Acids, Buffers, Enthalpy and Entropy Deck (4)
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1
Q

Acid Dissociation Constant, Ka

A

The equilibrium constant that shows the extent of dissociation of a weak acid. Ka = [H+][A-]/[HA]

2
Q

Brønsted-Lowry Acid

A

A (chemical species that is a) proton donor.

3
Q

Brønsted-Lowry Base

A

A (chemical species that is a) proton acceptor.

4
Q

Buffer Solution

A

A system that minimises pH changes upon addition of small amounts of an acid or a base.