Quiz Molarity and Dilution

True or False? The higher the concentration of a solution the less solute it has in it.

• True

• False

You have a 0.5 M MgSO₄ stock solution available.  Calculate the volume of the stock solution needed to make 2.0 L of 0.20 MgSO₄.

• 0.8 L
• 5 L 
• 0.1 L
• 0.5 L

Molarity is measured in

• moles per kg
• mols per L
• moles per kJ
• moles per mL

What is the molarity of a solution in which 58 g of NaCl are dissolved in 1.0 L of solution?

• 100 M

• 1.5 m

• 1.0 M

• 1.0 m

Tags

NGSS.HS-PS1-7

A solution with a low amount of solute

• concentrated
• supersaturated
• saturated
• diluted

Tags

NGSS.HS-PS1-5

How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM = 58.45)?

• 0.625 g NaCl
• 625 g NaCl
• 36.5 g NaCl
• 0.04 mol NaCl

Tags

NGSS.HS-PS1-7

Which sweet tea would you expect to taste the sweetest?

• 1M
• 3M
• 3.1M
• 2.5M

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO₃ to a volume of 250 mL?

• 15.9 M
• 0.636 M
• 0.642 M
• 1.59 M

The process in which solvent is added to make a solution less concentrated

• Aqueous
• Molarity
• Normality
• Dilution

How many mL of 10.8M HCl are required to make 100.0 mL of 3.00M acid?

• 27.8 mL

• 27.78 mL

• 2.8 mL

• 278 mL

Tags

NGSS.HS-PS1-7