HTHSCI 1LL3 Lecture Notes - Lecture 1: Ketone Bodies, Acid Dissociation Constant, Ph Meter
27 Jul 2018
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An acid is a substance that releases protons when dissolved. Extent of dissociation, that is, the amount of protons released compared to the total amount of compound, is a measure of the strength of the acid. Hcl is a strong acid, because it dissociates completely in water, generating free [h+] and cl- Acidity can be measured on a scale called ph ph. Most living cells have a very narrow range of tolerance for ph. The h+ concentration will be important (either explicitly or implicitly) for many other topics in biology. Each ph unit represents a factor of 10 difference in h+ Every factor of 10 difference in h+ represents 1. 0 ph units. Every factor of 2 difference in h+ represents 0. 3 ph units. Use a ph meter or ph paper. Titrate the solution with precise amounts of base or acids in conjunction with a soluble dye.
