An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...

CARBON dioxide retention resulting in an elevation of carbon dioxide tension of body fluids occurs commonly in chronic obstructive pulmonary disease. The hydration of carbon dioxide to carbonic acid ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...