Solution Preparation and Molarity Concepts

This video tutorial from Science Animation explains how to prepare a one molar solution of sodium chloride. It covers the concept of molarity, how to calculate moles and molecular weight of NaCl, and provides a detailed list of materials required. The video then guides viewers through a step-by-step procedure to prepare the solution, ensuring a clear understanding of the process.

What is the definition of molarity?

• The number of moles of solute per liter of solution

• The number of grams of solute per liter of solution

• The number of moles of solute per kilogram of solvent

• The number of grams of solute per kilogram of solvent

How many milliliters are there in 1 dm³?

• 1000 ml

• 500 ml

• 100 ml

• 1500 ml

What is the molecular weight of NaCl?

• 35.5 grams

• 23 grams

• 58.5 grams

• 100 grams

Which element in NaCl has a molar weight of 23?

• Hydrogen

• Sodium

• Oxygen

• Chlorine

Which of the following is NOT required for the preparation of the solution?

• Distilled Water

• Beaker

• Sodium Chloride

• Thermometer

What is the first step in the preparation procedure?

• Add sodium chloride to water

• Power on the mass balance

• Store the solution

• Stir the solution

How much sodium chloride is needed to prepare a one molar solution?

• 35.5 grams

• 58.5 grams

• 100 grams

• 23 grams

What is used to ensure the solution is homogeneous?

• A thermometer

• A storage tank

• A funnel

• A stirrer

What indicates the 1000 ml mark on the measuring flask?

• A blue line

• A green dot

• A yellow stripe

• A red mark

Where can the prepared solution be stored?

• In a metal container

• In a plastic bag

• In a wooden box

• In any bottle