LAB SECTION: NAME: EXPERIMENT 18: Determination of Bleach-A Redox Titration DATA
ID: 941278 • Letter: L
Question
LAB SECTION: NAME: EXPERIMENT 18: Determination of Bleach-A Redox Titration DATA SHEET1 Part A: Standardization of aIxx M Na S,o, NAME EXPERIMENT 18: Determination of Bleach-A Redox Titration DATA SHEET 2 Part B: Preparation and Titration of Diluted Isleach Average Molarity Nasp,- LAB SECTION Trial 1 Trial 2 Trial 3 Concantration of K1O, from Experiment 813) Volume of KIO, Pipeted Trial 1 Trial 2 Trial3 mmol or KIO, 00 mmol ofL, Formed Mass of Bleach Final Burette Reading Initial Buretle Reading Volume of Nasouaq) Required mmol of S,o Required mmol of 1, Present (Equation 2) 45 (from Equation 3) For Na s,o, (s,o) Final Burette Reading Initial Burete Reading Volume ofN,SO,(aq) Required mmol of S,0, Present e.nt 1442 051m e8 12.18 051ml o (from Equation 2) Mass of NaCIO Present (mg) Mass ofNaC Present (g) % (min) of NaClO in Bleach Avg.%(mm) of NaClO in Bleach Molarity S,O, Avg. Molanity Na,S,0, Beand of Bleach 165Explanation / Answer
Refer Data`sheet 1
...............................................Trial 1.......................Trial 2 ......................Trial3
mMols of KIO3 (IO3^-) .................0.98................... 0.935........................0.935......
mMols`of I2 `formed.....................2.94.....................2.805.........................2.805.....
Volume of Na2S2O3 required........6.47 ml...............6.19ml...................... 6.24ml....
mMol of S2O3^2- ...........................9.088.................9.063...........................8.99..............
Molarity of S2O3^2-........................9.088 x 10-3 ..........9.063 x 10-3 ..........8.99 x 10-3 ..........
Average Molarity of Na2 S2O3........................9.047 x 10-3 M .............................
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Please submit DATA SHEET 2 Separately as fresh question / posting
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