Answer to Question #162147 in General Chemistry for Rose

Question #162147

A 100.00 cm3 sample of natural water required 41.00 cm3 of 0.200 M hydrochloric acid for neutralization with screened methyl orange as indicator and 2.00 cm3 of the same acid with phenolphthalein as indicator. Calculate the HCO3- and CO32- content of the water in mg dm-3


1
Expert's answer
2021-02-15T02:47:17-0500

An acid-base titration is used to determine the unknown concentration of an acid or base by neutralizing it with an acid or base of known concentration. Using the stoichiometry of the reaction, the unknown concentration can be determined. It makes use of the neutralization reaction that occurs between acids and bases and the knowledge of how acids and bases will react if their formulas are known.


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