Chemistry

comparison qualitative and vicenary outline soft analysis: involves the determine of species present in a sample and is info in word form Quantitative analysis: involves the find of amounts or niggardliness of specific substances and is numerical data Compare destructive and non-destructive exam Destructive: is when the root word of the testing reply is altered by the chemical analogue and so the original sample is not recoverable. E.g. testing pH of a sample exploitation an indicator. Non-destructive: is when the composition of the testing solution is not altered and the original sample can be reused aft(prenominal) testing. E.g. testing pH of a sample using a pH meter. Describe qualitative and/or quantitative tests for hardness, turbidity, and acidulousness (pH) in locate to analyse and compare the shade of wet samples Hardness: Hardness is due to the presence of meaningful concentrations of atomic number 20 and magnesium ions in the water.

Hard water is water that does not lather with scoopful and which leaves a grey folderol almost baths and basins; if the water is not hard(and with very low concentrations of calcium and magnesium), wherefore it is called fluffy water. Ca2+(aq) + 2C17H35COO-(aq) ? Ca(C17H35COO)2(s). The precipitate is also written as (C17H35COO)2Ca Mg2+(aq) + 2C17H35COO- (aq) ? Mg(C17H35COO)2 (s) Qualitative: high levels of Ca2+ and Mg2+ ions make the water hard. This means soap doesnt lather (form froth). Sydney water is identified as soft water as its hardness lies between 10 40 ppm. easy water: < 75 ppm Hard water: one coulomb fifty 500 ppmIf you w! ant to get a wide-cut essay, order it on our website: OrderCustomPaper.com

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