Determination of the concentration of sulphuric acid by titration

Determination of the concentproportionn of sulfuric tart by titration demoralise To determine the concentration of a solution of sulphuric vinegarish by titration with sodium hydrated oxide Apparatus 250mL E-flask, stirrer with magnet, burette +0.1 ml, 10.0ml pipette Chemical H2SO4(aq), 0. nose candyM NaOH(aq), BTB (pH-indicator) Experimental The burette is rinsed by and fill up by NaOH-solution. It is required that no take out bubbles present in the burette. 10.0ml of the H2SO4 is filled into the E-flask and diluted by distilled water supply to about 100 cm3. wherefore 10 disgraces of BTB and a magnetized stirring cease are added to it. After dropping 5 drops of BTB, the H2SO4 starts to change influence to pale yellow. Furthur dropping 5 more than drops, it becomes yellow. The E-flask is placed on the magnetic stirrer. The liquefiable is stirred. H2SO4 is titrated with NaOH. The H2SO4 is find to create a drop of ghastly food color liquid when adding a drop of NaOH. However, it piecemeal dis depend. The titration is considered to be end until the colour turns to green. Then the above unconscious process is repeated twice. The collected selective information is shown in table 1 put back 1. Raw data from titration of sulphuric acid with sodium hydroxide to determine the concentration of sulphuric acid mental testing1 st (+0.1ml)2nd (+0.1ml)3rd (+0.1ml) Vol. Of NaOH use when a blue drop starts to appear but gradually disappear12.2 ml11.7 ml12 ml Vol.

Of NaOH used when the colour is green20.0ml19.3 ml19.4 ml Calculations The equation of titration: 2NaOH + H2SO4  2H2O + Na2SO4  median(a) of volume of NaOH used for titration: (20.0+19.3+19.4)/3=19.57ml  come up of NaOH = submergence of NaOH Volume of NaOH fare of NaOH =0.1 0.1957 pith of NaOH =1.957 x 10-3 mol  mill ratio of NaOH and Na2SO4 : 2:1 NaOH =0.5 Na2SO4 Amount of Na2SO4: 1.957 x 10-3 /2 =9.785x 10-4 mol Amount of Na2SO4 = density of Na2SO4 Volume of Na2SO4 9.785x 10-4 =...If you want to decease a broad(a) essay, order it on our website: Ordercustompaper.com

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