1a)Â Â From the volume of titrant added, calculate the moles of vitamin C for each titration. Show...

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Chemistry

1a)Â Â From the volume of titrant added, calculate themoles of vitamin C for each titration. Show a sample calculationfor trial 1, and then just state the final results for thecalculation of trials 2 and 3. Use 5 digits in all intermediatevalues and report the final value to the appropriate number ofsignificant figures.
Trial 1
Trial 2
Trial 3
b) From the results of question 1, calculate the average valuefor the number of moles of vitamin C titrated. Report the finalvalue to the appropriate number of significant figures.
c) Calculate the precision for the mole values used to calculatethe average in question 2.
Data table:
Trail1 Trail2 Trail3
Final buret reading 24.50 mL 48.80 mL 42.90 mL
Initial buret reading 0 mL 24.50 mL 18.32 mL
Volume of KlO3 24.50 mL 24.30 mL 24.58 mL
KlO3 concentration= 0.002012 M

Answer & Explanation Solved by verified expert

3.8 Ratings (582 Votes)

Ans Volume of titrnt ued KlO3 Trial 1 2450 mL Trial 2 2430 mL Trial 3 2458 mL This redox titration reaction happens in the presence of KI and acid as below The iodate ions are reduced to form iodine and the iodide ions are oxidized to form iodine KIO3 5 KI 6H 3I2 3H2O The liberated iodine oxidizes the VitaminC ascorbic acid as below Ascorbic acid I2 2I Dehydroascorbic acid Calculations 1 Note the volume of iodate solution used 2 Calculate the moles of See Answer

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	Trail1	Trail2	Trail3
Final buret reading	24.50 mL	48.80 mL	42.90 mL
Initial buret reading	0 mL	24.50 mL	18.32 mL
Volume of KlO3	24.50 mL	24.30 mL	24.58 mL