Measuring Concentration and Review of Solutions

When a solution is very concentrated, it has a high amount of _________ to _________.

• solute to solvent
• solvent to solute
• solvent to solution
• solution to solute

Tags

NGSS.HS-PS1-5

Solvent is best defined as-

• a mixture in which the substances are spread out evenly between one another and cannot be told apart
• the ability of a substance to dissolve in another substance
• a substance that dissolves in another substance
• a substance into which another substance dissolves

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

• 0.018 M

• 0.0011 M

• 1.052 M

• 0.062 M

How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl

(GFM = 58.45)?

• 0.625 g NaCl

• 625 g NaCl

• 36.5 g NaCl

• 0.04 mol NaCl

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

• 1.07 gram
• 62.7 mol
• 1.07 mol
• 62.7 grams

What is the concentration of a solution in parts per million if 0.02 grams of NaCl is dissolved in 1000 grams of solution?

• 2 ppm

• 20 ppm

• 200 pm

• 0.2 ppm

What is the concentration of solution (in ppm) made up of 0.005 grams of solute in 350 grams of solution?

• 14.3 ppm

• 12.1 ppm

• 1.4 ppm

• 9.8 ppm

If you had four solutions of sweet tea, which would be the sweetest based on its concentration?

• 1.5 M

• 0.5 M

• 2.4 M

• 0.08 M

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

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