화학기초experiment(실험) 피피티
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작성일 19-09-27 10:47본문
Download : 화학기초실험 피피티 자료.ppt
화학기초experiment(실험) 피피티
실험결과/화학
화학기초실험 피피티 자료 , 화학기초실험 피피티 자료화학실험결과 , 화학기초실험 피피티 자료
순서
설명
화학기초실험,피피티,자료,화학,실험결과
Download : 화학기초실험 피피티 자료.ppt( 36 )
Objective
Introduction & background
Apparatus & reagents
Procedure
Reference
When the pH value of sample is changeable, we must be able to measure its pH value rationally.
Chemical property of acidity or alkalinity is so important for safe contact. So determination of the acidity-alkalinity by acid- alkali reaction is crucial in the understanding of chemical functions.
What is the pH
a measure of the acidity or basicity of an aqueous solution
pH = log (1/[H+])=-log [H+]
measured by pH paper or pH meter
pH= pHs + (E-Es)/(2.3026RT/E)
pHs = pH of the standard pH solution.
E = In detection solution, electromotive force (Volt) between glass electrode and reference electrode.
Glass electrode Ⅰ detection solution Ⅱ reference electrode
Es = In standard solution, electromotive force (Volt) between glass electrode and reference electrode.
Glass electrode Ⅰ standard pH solution Ⅱ reference electrode
R = gas constant
T = absolute temperature in Kelbin
F = Farada…(skip)
화학기초experiment(실험) 피피티
다.