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REDOX TITRATIONS (QUANTITATIVE TEST)

July 16, 2020
NAME: ahmed al-kadhem STUDENT ID: 392902632
Experiment # 11
REDOX TITRATIONS (QUANTITATIVE TEST)
Objectives
To standardize a Potassium Permanganate (KMnO4, oxidizing agent), solution
by titrating it with a primary standard solution of oxalic acid (H2C2O4) as a
reducing agent.
Materials and Apparatus
Apparatus
Beakers (100 mL)(2), burette, burette clamp, retort stand, conical flasks (125
mL) magnetic stirrer / bar, burette marker, glass funnel, pipette (10 mL), pipette
bulb (10 mL), analytical balance, volumetric flask with stopper (100 mL), wash
bottle, weighing dish and micro- spatula.
Materials
d.0∙025 M potassium permanganate (KMnO4) solution, Oxalic acid (0.025 M), and
distilled water.
Techniques used:
Cleaning glassware, Disposing of chemicals, Heating liquid and solutions, and
Titration
Theory / Introduction:
Volumetric analysis is a quantitative approach based totally on the mole
relationships, or stoichiometry, in a chemical reaction. The system entails
titration. This method determines the extent of one solution, in order to react
with an as it should be measured quantity of some other solution.
Oxidation-Reduction (Redox) Titration: In this experiment, the titration
examines a redox reaction between (KMnO4) solution, and Oxalic acid
(H2C2O4).
In the above oxidation half-reaction, C2O42- is oxidized here (Oxidation no of Carbon
increased by +3 to +4 and MnO4- is reduced here ( Mn oxidation decreased from +7 to
+ 2.
2MnO4 (aq) + 5 C2O42- (aq) + 6H+ (aq)………> 2Mn2+ (aq ) + 10 CO2 (g) + 8H2O(l)
Report Sheet
NAME: ahmed al-kadhem STUDENT ID: 392902632
Experiment #11: Redox Reaction
A. Determination of Molarity of Potassium Permanganate Solution
S. N.
Description
Trial 1
1.
Molarity of C2H2O4
0.1 M

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