IPC Fall Semester Exam 2024

Front

Why is water considered a polar molecule?

Back

Water is considered a polar molecule because it has a positive and negative end due to the unequal sharing of electrons between the oxygen and hydrogen atoms.

Front

What is molarity?

Back

Molarity is a measure of concentration, defined as the number of moles of solute per liter of solution.

Front

How do you calculate molarity?

Back

Molarity (M) = moles of solute / liters of solution.

Front

What is the molarity of a solution that contains 6 moles of solute in 2 liters of solution?

Back

3 M

Front

What is dilution in chemistry?

Back

Dilution is the process of reducing the concentration of a solute in a solution, usually by adding more solvent.

Front

How do you calculate the dilution of a solution?

Back

Using the formula C1V1 = C2V2, where C is concentration and V is volume.

Front

How much 0.05 M HCl solution can be made by diluting 250 mL of 10 M HCl?

Back

50 L

Front

What is cohesion in chemistry?

Back

Cohesion is the attraction of molecules to the same substance, which causes them to stick together.

Front

What is adhesion in chemistry?

Back

Adhesion is the attraction of molecules to different substances.

Front

What is capillary action?

Back

Capillary action is the ability of a liquid to flow in narrow spaces without the assistance of external forces, often due to cohesion and adhesion.