Preparation of 0.1M Oxalic Acid

This video tutorial guides viewers through the preparation of a 250 ml 0.1M standard solution of oxalic acid. It begins with an introduction to the materials required, followed by a detailed calculation of the mass of oxalic acid needed. The procedure is explained step-by-step, including the careful transfer of oxalic acid into a measuring flask, washing of equipment, and final adjustments to achieve the desired solution concentration. The tutorial concludes with the successful preparation of the solution.

What is the primary purpose of the video tutorial?

• To demonstrate the preparation of a 0.1M oxalic acid solution.

• To explain the properties of oxalic acid.

• To discuss the history of oxalic acid.

• To compare different types of acids.

Which of the following is NOT listed as a required material for the preparation?

• Funnel

• Beaker

• Glass rod

• Dropper

How is the mass of oxalic acid calculated for the solution?

• By estimating visually

• By using the formula MV mm / 1000

• By using a chemical reaction

• By measuring directly with a scale

What is the molar mass of hydrated oxalic acid used in the calculation?

• 100 g/mol

• 200 g/mol

• 150 g/mol

• 126 g/mol

What is the first step in the preparation procedure after calculating the mass?

• Transfer oxalic acid to a measuring flask

• Add water to the flask

• Heat the solution

• Stir the solution

Why is it important to wash the watch glass and funnel during the preparation?

• To ensure all particles are transferred to the flask

• To remove impurities from the solution

• To clean the equipment for future use

• To cool down the solution

What is the maximum amount of distilled water used for washing the funnel?

• 150 ml

• 200 ml

• 100 ml

• 50 ml

What should be done after adding distilled water just below the etched mark?

• Add more oxalic acid

• Heat the solution

• Add the last few mL of water drop by drop

• Stir the solution vigorously

What is the final step to ensure the solution is uniform?

• Boil the solution

• Add more distilled water

• Shake the flask gently

• Let the solution sit overnight

What is the final result of the preparation process?

• 250 ml of 0.1M oxalic acid solution

• 500 ml of 0.1M oxalic acid solution

• 250 ml of 0.5M oxalic acid solution

• 500 ml of 0.5M oxalic acid solution