KMnO4 Solution Determination Quiz

What is the molarity of the prepared Mohr's salt solution?

• 0.1 molar

• 0.01 molar

• 0.05 molar

• 0.2 molar

Which piece of equipment is used to measure 20ml of Mohr's salt solution?

• Burette

• Pipette

• Beaker

• Measuring jar

What color change indicates the end point of the titration with KMnO4?

• Green

• Blue

• Yellow

• Light pink

What is the molarity of the prepared oxalic acid solution?

• 0.1 molar

• 0.2 molar

• 0.05 molar

• 0.01 molar

What is the first step in preparing a standard solution of oxalic acid?

• Weighing the oxalic acid crystals

• Dissolving the crystals in water

• Adding sulphuric acid

• Heating the solution

What is the purpose of heating the oxalic acid solution during titration?

• To evaporate excess water

• To dissolve the crystals

• To speed up the reaction

• To change the color

How many moles of potassium permanganate react with 5 moles of oxalic acid?

• 3 moles

• 2 moles

• 1 mole

• 4 moles

What is the role of dilute sulphuric acid in the titration process?

• To change the color

• To maintain acidity

• To act as a catalyst

• To neutralize the solution

Which equipment is used to ensure the solution is uniform in the standard flask?

• Funnel

• Stopper

• Pipette

• Glass rod

How is the strength of the potassium permanganate solution determined?

• By observing its color change

• By multiplying its molarity with its molar mass

• By measuring its volume

• By heating it to a specific temperature