Question

Answer the following questions: (D1) Q1: (a) Describe the errors you could have made while preparing the standard solution. (b)Suggest improvements to the methods you have carried out. Explain how these improvements will help in getting better results. Q2: (a) Describe the errors you could have made carrying out the titrations. (b)Suggest improvements to the methods you have carried out. Explain how these improvements will help in getting better results. Q3: (a) Describe the errors that could be made while performing the flame test. (b) Suggest improvements to reduce errors in the flame test. Q4:(a) Describe the errors that could be made while carrying out the anion tests. (b) Suggest improvements to reduce errors in the anion tests.

Answer 1

1. a) Most crewidl fart is weighing. One fossibility is one might have weighed some different amount other than exact mass to be weighed , but did calculation according to exart Mass. Eg: ff one need to weigh 0.24239 Nasoy, one could have weighed 0 2520g bet still the person is using 0.24239 weight in calculations aand error is filling water en standard flask more than or less than mark (6) Inforovements: i) Always focus on weighing. If I one has weighed 0. 2520g then the I person should use the same weight is following calculations ii) Always transfer whole Salt to flask. 1) fill water upto the mark carefully not slight excess nor less than maak.

2. a) During titration i Exact amount of fichette of titre should be added to the titration flask. & Adding more drops of titrant (Nack) than end fornt. 11) Not forening over and point. in too fast or too slow titration b) Imforovements 1 Measurement of volume with hipette of tetre should be done extreme carefully. Do not Blow fichette it) One should be careful while adding tetrant. Too slow too fast tetration should not be carried. Continuous swirling required. in truss on end point.