N46: Molarity

Multiple Choice

If an electrical current can run through a solution, it is said to contain

• Water

• nonelectrolytes

• electricity

• electrolytes

Multiple Choice

What would the substance be classified as?

• nonelectrolyte, no dissociation

• nonelectrolyte, partial dissociation

• strong electrolyte, complete dissociation

• weak electrolyte, partial dissociation

Multiple Choice

Which of the following best describes a solution?

• A mixture of two solids

• A homogeneous mixture created by dissolving a solute into a solvent

• A heterogeneous mixture of liquids

• A pure substance

Open Ended

Which cup of tea is more concentrated and how can you tell?

Multiple Choice

Which of the following best describes a diluted solution?

• More solvent, less solute

• More solute, less solvent

• Equal amounts of solute and solvent

• No solute present

Multiple Select

Select all statements that are true about concentration and molarity.

• Concentration measures how much solute is dissolved in a solvent.

• Molarity is calculated as moles of solute per liter of solution.

• Molarity can be expressed as mol/L.

• Molarity is calculated as grams of solute per liter of solution.

Open Ended

How do you convert grams to moles when calculating molarity?

Multiple Choice

Which information is needed to calculate the molarity of a solution?

• Moles of solute and liters of solution

• Grams of solute and liters of solution

• Temperature and pressure

• Volume of solute and solvent

Multiple Choice

What is the molarity of 3 mole of hydrochloric acid in 3 L of water. 

• 3
• 1
• 6
• 9

Multiple Choice

What is the molarity of a solution made by adding 1.565 moles of PbNO₃ to .500 L?

• 300. M
• 31.3 M
• 3.13 M
• 1.56 M

Multiple Choice

Calculate the molarity of the following solution:  1.0 mole of KCl in .750 L of solution.

• 0.750 M
• 99 M
• 1.3 M
• 2.0 M

Multiple Choice

What is the molarity of 4 g of NaCl (MM=58.45) in 3.800 L of solution?

• 0.0179 M

• 0.0011 M
• 1.052 M
• 0.062 M