Ammonium Dichromate Solution Preparation

This video tutorial demonstrates how to prepare a 0.01 molar solution of ammonium dichromate and a ten times diluted solution. It covers calculating the required mass, preparing the solution, and ensuring accuracy in measurements. The video concludes with a comparison of the concentrated and diluted solutions, highlighting the differences in color intensity.

What is the main chemical used in the experiment?

• Calcium carbonate

• Ammonium dichromate

• Potassium permanganate

• Sodium chloride

How is molarity defined in the context of this experiment?

• Volume divided by mass

• Mass divided by molar mass

• Number of moles divided by volume

• Volume divided by number of moles

What is the molar mass of ammonium dichromate used in the calculations?

• 100.00 grams per mole

• 200.00 grams per mole

• 252.07 grams per mole

• 150.07 grams per mole

What is the mass of ammonium dichromate needed to prepare the solution?

• 0.45 grams

• 0.35 grams

• 0.25 grams

• 0.15 grams

What tool is used to weigh the ammonium dichromate?

• Graduated cylinder

• Volumetric pipette

• Analytical balance

• Burette

Why is it important to wash the solid into the flask?

• To decrease the volume

• To ensure all solid is transferred

• To increase the concentration

• To change the color

What is the purpose of shaking the solution before filling it to the mark?

• To increase the volume

• To change the color

• To dissolve the solid completely

• To cool the solution

How is the ten times diluted solution prepared?

• By adding 10 mL of solution to 90 mL of water

• By adding 100 mL of water to 10 mL of solution

• By adding 90 mL of solution to 10 mL of water

• By adding 10 mL of water to 10 mL of solution

What is the visual difference between the concentrated and diluted solutions?

• The diluted solution is darker

• Both solutions have the same color

• The concentrated solution is lighter

• The concentrated solution is darker

What is the final step to ensure the diluted solution is homogeneous?

• Adding more solute

• Rotating the flask

• Stirring with a rod

• Boiling the solution