PCAT Study Guide 2018-2019: PCAT Prep Book & Practice Test Questions for the Pharmacy College Admission Test by Test Prep Books Pharmacy 2018 and 2019 Prep Book Team

PCAT Study Guide 2018-2019: PCAT Prep Book & Practice Test Questions for the Pharmacy College Admission Test by Test Prep Books Pharmacy 2018 and 2019 Prep Book Team

Author:Test Prep Books Pharmacy 2018 and 2019 Prep Book Team
Language: eng
Format: azw3
Published: 2018-03-12T00:00:00+00:00


Acids-Base Theories

Acids and bases are defined in many different ways. An acid can be described as a substance that increases the concentration of H+ ions when it is dissolved in water, as a proton donor in a chemical equation, or as an electron-pair acceptor. A base can be a substance that increases the concentration of OH- ions when it is dissolved in water, accepts a proton in a chemical reaction, or is an electron-pair donor.

Water can act as either an acid or a base. When mixed with an acid, water can accept a proton and become an H3O+ ion. When mixed with a base, water can donate a proton and become an OH- ion. Sometimes water molecules donate and accept protons from each other; this process is called autoionization. The chemical equation is written as follows: H2O + H2O → OH- + H3O+.



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