10cm3 Measuring Cylinder Percentage Error
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Percentage Error Of Measuring Cylinder
Free AccessLearn More > Upload Documents Write Course Advice Refer your Friends Earn MoneyLearn More > Upload Documents Apply for Scholarship Create percentage error of 25cm3 pipette Q&A pairs Become a Tutor Are you an educator? Log in Sign up Home Cambridge CHEMISTRY CHEMISTRY 9701 9701_s11_qp_34 Using a 25 cm 3 measuring cylinder add about 10 cm 3 SCHOOL Cambridge COURSE TITLE CHEMISTRY 9701 http://www.thestudentroom.co.uk/showthread.php?t=849691 TYPE Test Prep UPLOADED BY RitwikP PAGES 12 Click to edit the document details This preview shows pages 3–7. Sign up to view the full content. View Full Document Using a 25 cm 3 measuring cylinder, add about 10 cm 3 of FB 4 . • Using the same measuring cylinder, add about 10 cm 3 of FB 5 . • Titrate the mixture in the flask with FB 2 until the colour https://www.coursehero.com/file/p7an8l1/Using-a-25-cm-3-measuring-cylinder-add-about-10-cm-3-of-FB-4-Using-the-same/ is pale yellow. • Add about 10 drops of starch indicator. A blue-black colour should be seen as the starch reacts with the remaining iodine. • Continue to add FB 2 until the blue-black colour just disappears leaving a colourless solution. You should perform a rough titration . In the space below record your burette readings for this rough titration. The rough titre is ……………… cm 3 . • Carry out as many accurate titrations as you think necessary to obtain consistent results. • Make certain any recorded results show the precision of your practical work. • Record in an appropriate form below all of your burette readings and the volume of FB 2 added in each accurate titration. [7] (b) From your accurate titration results obtain a suitable value to be used in your calculations. Show clearly how you have obtained this value. The iodine produced by 25.0 cm 3 of FB 3 required ……………… cm 3 of FB 2 . [1] I II III IV V VI VII This preview has intentionally blurred sections. Sign up to view the full version. View Full Document 4 9701/34/M/J/11 © UCLES 2011 For Examiner’s Use (c) Calculations Show your working and appropriate significant figures in the final answer to each step of your calculations. (i) Calculate how many moles o
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