GEOL 1120 Study Guide - Quiz Guide: Buffer Solution, Formaldehyde, Sodium Bicarbonate
13 Nov 2018
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Document Summary
As a follow-up to the discussion of buffering in lecture, this document reviews the calculation we did in class to demonstrate how buffering inhibits changes in ph. For the case of the carbonate system, the key idea is that a buffered solution has a lot of hco3 which neutralizes some of the h+ that comes from the addition of hcl. That results in a smaller increase in h+ and therefore a smaller decrease in ph than in the case of hcl added to an unbuffered solution. Here we"ll go through the same example we went through in class. Our goal is to compare the ph drop that results from adding 0. 01 molar hcl to unbuffered and buffered solutions. Case 1: adding hcl to an unbuffered solution. Imagine adding hcl to pure water (initial ph = 7), such that the concentration of.
