Titration - Handout Redox Titration Part 1: To determine...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Redox Titration • Part 1: To determine the percentage of H 2 O 2 in aqueous solution Part 2: To determine the percentage of ascorbic acid in vitamin C Handout
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Principles Concept of redox reaction 2MnO 4 - + 5 H 2 O 2 +6H + 2 Mn 2+ + 5O 2 + 8H 2 O +7 -1 take 5e - , oxidizer give 1e - , reducer 0
Background image of page 2
Procedures For Part 1 • Rinse the buret with KMnO 4 , 5 ml each time, three times • Fill the buret with 0.02M KMnO 4 , record the initial volume in ml Mass of empty flask ___g
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Procedure (Con.) • Mass of flask + 20-22 drops H 2 O 2 __g • Add 75 ml H 2 O and 10 ml 6 M H 2 SO 4 into the flask • Titrate the H 2 O 2 solution with KMnO 4 with constant swirling.
Background image of page 4
Procedure (Con.) Endpoint- the pink color persist for at least 30 seconds, record the final volume in ml Repeat two more times
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
• Rinse the buret with I 2 solution 3 times, 5 ml each time. • Fill the buret with 0.05M I 2 solution record the initial volume in ml Mass of weighing paper _____g Pulverize half vitamin C tablet. Mass of weighing paper + sample__g
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 12

Titration - Handout Redox Titration Part 1: To determine...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online