OBJECTIVE:
1.To prepeare a touchstone issue of oxalic hot
2.To standardise 0.2M NaOH solution
3.To encounter the concentration of HCl solution
4.To acquire the counterbalance technique of titration
Introduction:
Titration is a technique apply to determine the concentration of a solution using another solution with a known concentration.
Standard in basic titration:
atomic number 53 of the solution involve in a titration is used as standard solution .The standard solution can be classified as either aboriginal or secondary.A aboriginal standard solution is prepared by dissolving an accurately weighed pure solid of a known molar softwood in a known volume of distilled water.
A primary standard is used to determine the molarity of the other standard solution,known as secondary standard.For example,oxalic acid,H2C2O4,,and potassium hydrogen phthalate,KHC8H4O4,are two green primary standards used to determine the concentration of bases (secondary standard).
Solution of NaOH and HCL used in titration need to be standardised because they contain impurities.Solid NaOH is hygroscopic(it absorbe moisture). Thus, it is problematical to obtain its accurate mass.The standardised based can and then be used to determine the concentration of other acids.
Equivalance head up and abate point
An equivalent point is the point at which subscribe to reaction accurs between the two reagent according to the stachiometry.To detect this equality point,an indicator which produces a change in colour is often used.the point at which indicator change colour is called the end point.The end point and equivalence point should ideally be the same.
Chemical equation:
In this acid base titration,the neutralization reaction reaction involve are:
H2C2O4(aq)+2NaOH(aq)Na2C2O4(aq)+2H2O(l)….(1)
HCL(aq)+NaOH(aq) NaCL(aq)+H2O(l) ….(2)
Procedure:
(A)Preparation of standard solution
1. set of,3.25 g of hydrated...If you want to get a full essay, edict it on our website: Orderessay
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