Chemistry Research Part 1 Acids Essay Example for Free

Chemistry Research Part 1 Acids EssayEthanoic acid is non-toxic and is a anaemic acid 4, meaning it will non do any damage to most surfaces as it does not corrode or bind to other metals, therefore force out be easily suppressd through washing or rinsing it 2. DisadvantagesEthanoic Acid is the slowest de- subduer of the three acids, and is therefore the least effective. It also whitethorn cause an unpleasant smell, and can have a negative effect on the taste of burnt umber 6 meaning one would need to spend longer time rinsing and cleaning the machine good to ensure that the taste of the coffee is not affected. Citric AcidAdvantagesCitric acid leaves behind zip toxic residues and has just enough acidic concentration to descale without etching or damaging crime syndicate surfaces in any way and there atomic number 18 no volatile compounds or products that harm the environment. DisadvantagesBecause citric acid is a weak acid, it wont remove heavy build-up of scale very qui ckly. It is also a powder hence it must be dissolved for use. It also works best with hot water meaning there will be higher energy consumption. Even when used with hot water, citric acid is not as effective at descaling as Sulfamic acid. Sulfamic AcidAdvantagesSulfamic acid is the fastest de-scaler It dissociates into hydroxonium ions more than readily in aqueous solution than the others, therefore giving a greater concentration of atoms that are able to react with the calcium in lime scale. It is safe to use because it does not produce centiliter gas 5, which can be toxic. Sulfamic acid also has a low volatility. DisadvantagesSulfamic Acid can be an irritant to eyes or skin and is the most expensive of the de-scalers. Q2) How these de-scalers remove limescaleLimescale forms when hard water is heat above 61C or when it is left to evaporate on surfaces such as lights-out and showerheads. Hard water is water that contains high quantities of calcium and magnesium ions. These har dness minerals, in the form of calcium carbonate and magnesium carbonate, precipitate out of hard water to form limescale 1.Therefore, to clean or remove limescale, something needs to dissolve or soften calcium carbonate and/or magnesium carbonate, so it can easily wash away. Acids cause mineral deposits such as rust to oxidise, thereby weakening them and reservation it possible to simply wash them away. Lime scale removers work by chemically reacting with the lime scale to form safe chemicals and ions.Lime scale is atomic number 20 Carbonate, and when broken down by strong acids, produces Calcium Chloride, Water and CO2. These are much safer, and can be washed away with water, to remove the CaCl from the area. Bibliography1 http//www.dynapipe.co.uk/how-to-remove-limescale.htm2 http//www.coffeehomedirect.com/how/to/clean/a/coffee/maker/with/vinegar 3 http//www.ehow.co.uk/how_7404899_delime-coffee-maker.html 4 http//incarinsurance.org/advantages/advantages-and-disadvantages-of-usin g-ethanoic-acid-as-a-descaler-.html 5 http//uk.answers.yahoo.com/question/index?qid=20130123013345AA71LkB 6 http//www.p4c.philips.com/cgi-bin/dcbint/cpindex.pl?scy=ZAslg=ENGctn=HD5405/60dct=FAQrefnr=0092154view=aa12_view_partial.htmlsession=20120502004843_66.249.71.242faqview=1