Concentration Of Potassium Permanganate Lab Report

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-To determine the concentration of potassium permanganate solution

Hypothesis
-Purple coloured solution Potassium Permanganate will titrate with the solution of iron sulphate and the colour of iron sulphate will slowly turn pink as it reaches the end point.

Variables
Independent:
-Colour change in colour in iron (ll) solution
Dependent:
-Amount of Potassium Permanganate used
Controlled:
-Mass of Iron (ll) sulphate
-Stated concentration of Potassium Permanganate in container

Materials/Apparatus

A) Preparation of Standard iron (ll) solution
• Pure hydrated iron(II) ammonium sulphate, Fe(NH4)2(SO4)2.6H2O
• Concentrated sulfuric acid
• Electronic balance
• 250 mL volumetric flask with stopper labels

B) Standardising Potassium Permanganate Solution
• standard iron (II) ammonium sulfate solution
• -potassium permanganate solution, KMnO4(aq)
• -2 mol/L sulfuric acid
• -50 mL burette
• -25 mL volumetric pipette
• -250 mL conical flask
• -10 mL measuring cylinder  retort stand and clamp

Procedure
A) Preparation of standard iron (ll) solution
3g of hydrated iron (II) ammonium sulfate was weighted accurately, using a 50 mL beaker. The salt is transferred into a 250 mL volumetric flask using a filter funnel, washed down with distilled water. After that, 100 mL of water is added, followed by the addition of 5 mL CONCENTRATED H2SO4 into the volumetric flask. Lastly a stopper was used to close the volumetric flask and it’s then shake and made

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