Molarity Dilutions

When you make a dilution, which of these values remains constant?

• The molarity (M)

• The total moles of solute

• The volume (V)

• The concentration

Tags

NGSS.HS-PS1-7

How do we make a dilution?

• Add more solute

• Remove solute

• Remove solvent

• Add more solvent

How many mL of stock solution of 2M NaCl do you need to prepare 100 mL of 0.150M NaCl?

• 7.5 mL

• 15 mL

• 1333 mL

• 200 mL

Which of the following is the Dilution Formula?

• V₁M₁ = V₂M₂

• M = m/V

• V = mT

• PV = nRT

The term molar, which describes a solution's concentration, is written as?

• M

• mol

• g

• g/L

The definition of a stock solution is ...

• a highly concentrated solution that is meant to be diluted to some lower concentration.

• moles of solute divided by liters of solvent

• a solution used to make soup and is usually either chicken or beef flavor

• a solution with less dissolved solute than a dilute solution.

50 ml of a 1 M solution is diluted until the final volume is 80ml. How much water was added?

• 50 ml

• 1.3 ml

• 30 ml

• 130 ml

Which one of the following diagrams has the highest boiling point?

• 1

• 2

• 3

• 4

• 5

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Calculate the molarity of the following solution:  1.0 mole of KCl in 750.0 mL of solution.

• 0.750 M

• 99 M

• 1.3 M

• 2.0 M

What is the molarity of 4 g of NaCl (MM=58.45g/mol) in 3,800 mL of solution?

• 0.018 M

• 0.0011 M

• 1.052 M

• 0.062 M