Chemistry Experiment

9 Experiment A Volumetric Analysis A titrimetric digest requires the careful addition of titrant. To fasten and exemplificationize a sodium hydroxide solution To determine the sub concentration of a strong acid Objectives The following techniques are use in the Experimental Procedure Techniques 2 4 16b 16a 90 80 5 16c 6 13c 15a 15b ! A chemical analysis that is performed in the main with the aid of volumetric glassware (e.g., pipets, burets, volumetric ?asks) is c altogethered volumetric analysis. For a volumetric analysis procedure, a have a go at it quantity or a guardedly deliberate means of one warmness reacts with a to-be-determined amount of another suffice with the reaction occurring in aqueous solution. The volumes of all solutions are care salutaryy heedful with volumetric glassware. The cognise amount of the fondness for an analysis is by and large measured and available in devil expre ssive styles: 1. As a primary standard: A precise mass (and thus, moles) of a solid centre of attention is measured on a balance, dissolved in water, and past reacted with the content beingness analyzed. 2.

As a standard solution: A measured number of moles of substance is present in a measured volume of solutiona solution of cognise concentration, generally expressed as the molar concentration (or molarity) of the substance. A measured volume of the standard solution then reacts with the substance being analyzed. Introduction Primary standard: a substance that has a known high degree of purity, a r elatively large molar mass, is nonhygroscop! ic, and reacts in a predictable way Standard solution: a solution having a veridical well known concentration of a solute The reaction of the known substance with the substance to be analyzed, occurring in aqueous solution, is conducted by a titration procedure. The titration procedure requires a buret to dispense a liquid, called the titrant, into a ?ask containing the analyte (Figure 9.1a). The titrant...If you want to get a full essay, nine it on our website: BestEssayCheap.com

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