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Gilly

IA: Are Quantitative Results a must?

I have just done a practical on the affects on equilibrium of various factors. We were given background information about two equilibriums (chromate-dichromate equilibrium and the equilibrium between [Co(H2O)6]2+ and [COCL4]2-) and given Le Chatelier's Principle, and then told to identify the factors that affect the equilibrium and evaluate wheter the equilibrium adhered to Le Chatelier's principle. Considering this is all we were given, the prac I carried out involved adding acids and bases to the first equilibrium and recording the direction (left or right) in which the reaction shifted (I also tried to vary temperature to seee its effect, but there was none forthcoming - is the chromate-dichromate reaction thermoneutral (or just about), or was there something else going on here...?) and then for the cobalt reaction i added HCl and water to shift the equilibrium, and again tried varying temperature this tiem with greater success. Which sections of the 2009 IA criteria would this practical be suitable for? Design and CE/Design/CE/All/none?

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ummm well as uve already carried out the experiment it cant be design...It could be assesed under data collection and processing as well as conclusion and evaluation..

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