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tags: Hydrochlorica Acid Solution, pH Levels Powerful Essays 1596 words (4.6 pages) Preview - Investigating the Concentration of Citric Acid Problem - I have been set the task of determining the concentration of a sample of citric acid, using only.0 M solution. You may also sort these by color rating or essay length. 1 or 2 drops od suitable indicator (phenolphthalein) is added to indicate the end point. Look at the label to see if there are products containing the less toxic chemical like propylene glycol when you are buying antifreeze. The alkalis break down organic residues chemically. Chemicals that can cancel out an acid in this way are: bases (metal oxides or hydroxides alkalis (bases that dissolve metals (e.g. In short, the analysis of the four tests for chemical and physical properties revealed that metal A is aluminium, metal B is zinc and metal C is iron. Starch consists of two types of molecules, the linear and helical amylose and the branched amylopectin. Marble chips) All of these have a similar way of removing the hydrogen from the acids (they swap it or their metal atoms) but the reactions are quite different. For example Boron trifluoride is act as an acid and forms a complex by receiving couple of electrons of Trimethylamine.