Titration Lab Report

Lab Report 2 Titration CHEM1903 Chemistry 1A (SSP) Michael West (305159240) 1. testify 2.2 Titrimetric determination of the molecular fix of an organic sharp system An nameless organic sulfurous was supplied in solid form. The pungent was know to be diprotic and had the reference number 19. Using an analytical balance, 1.5397 g of the stinging were weighed out, and made up with deionised body of piddle into 250 mL of solution. 25 mL of the acid solution was added to a conical flask with phenolphthalein indicator and titrated against standardized 0.0983 M NaOH solution. tierce titrations were performed and the results averaged. The milling machinery mass of the acid was then calculated and compared to a list of presumption possibilities. Results and Calculations The three titres were 26.30 mL, 26.50 mL and 26.30 mL. The mean titre glitz was and then 26.37 mL. The number of moles of NaOH was thus moles. Because the acid was diprotic, reaction stoichiometry dictates that there was sensation mole of acid for every devil moles of NaOH. Accordingly, in 25 mL of the acid solution, there were moles of acid. The molar mass of the acid is then g?mol-1. This matches most fast with succinic acid, for which the abandoned molar mass was 118.1 g?mol-1. Although this represents a 0.6% discrepancy, the error is crushed enough to identify the acid as succinic acid with a high layer of certainty, given the possibilities listed. 2. Experiment 2.3 termination of the carbon dioxide and hydrogencarbonate contents of pa water by substantiating titration Method A cognize excess of value sodium hydroxide was added to a cognise amount of chilled soda water. The be sodium hydroxide after(prenominal) reaction with the soda water was determined by titration against standardised HCl, to two separate endpoints. A fuller description of the regularity is avai laboratoryle in the lab book. Results Define titre A as the volume of HCl added in t he back-titration to the phenolphthalein end! point, and titre B as the volume of HCl added between...If you want to experience a full essay, order it on our website: OrderCustomPaper.com

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