Molarity Problems

What is the molarity of a solution formed by dissolving 0.45 mol of potassium hydroxide (KOH) in enough water to form 0.674 L of solution? Use the appropriate formula to solve for the missing variable.

• 0.30 M

• 0.67 M

• 1.49 M

Which equation is used to find molarity?

• Moles solute/L solution

• Moles solute/kg solution

• Moles solute/kg solvent

• Grams solute/L solution

Tags

NGSS.HS-PS1-5

What is the molarity of a solution that contains 5 moles of solute in 2 liters of solution?

• 2.5 M

• 5 M

• 10 M

• 0.4 M

What is the definition of molarity?

• The mass of a substance in grams

• The number of particles in a substance

• The number of moles of solute per liter of solution

• The volume of solvent in liters

Calculate the molarity of the following solution: 1.0 mole of KCl in .75 L of solution.

• 0.750 M

• 99 M

• 1.3 M

• 2.0 M

What is the molarity of a solution made by adding 1.565 moles of PbNO₃ to .5 L?

• 300. M

• 31.3 M

• 3.13 M

• 1.56 M

How many moles are needed to make 2.5 L of a 3.8 M solution? 

• 9.5 mol

• 0.66 mol

• 1.5 mol

• 15 mol

How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of .125 L?

• 1074 mol

• 0.069 mol

• 1.07 mol

• 62.7 mol

Molarity is measured in _____.

• moles per g.

• mols per L.

• moles per mm.

• moles per mL.

What are the units of molarity?

• M

• m

• Ml

• Mr

Tags

NGSS.HS-PS1-5