Solutions and Concentrations

Many chemical reactions within chemistry lab occur in

By definition a solution is a ____________ mixture that consists of a solvent and solute.

• homogeneous

• heterogeneous

• colloid

• solid

If you have a 3.0 M Cu(NO3)2 solution and a 1.0 M Cu(NO3)2 solution, how would their color appear?

• the 3.0M would be darker

• both would be the same color

• the 1.0 M would appear darker

Rocks are made of minerals, which are pure substances. In most cases, rocks are examples of what kind of solution? Consider the rock type: granite as your example

• heterogeneous solid

• homogeneous solid

• homogenous liquid

• heterogeneous liquid

The air we breathe is generally considered what kind of solution?

• heterogenous gas

• homogeneous gas

Which of the following salts is able to dissolve the most solute /100 g water at a temperature of 20 ^oC

• Sodium nitrate

• Potassium nitrate

• Potassium chloride

• Sodium chloride

• Potassium chlorate

A beaker has 160 grams of potassium nitrate COMPLETELY dissolved at 40^oC

• the solution is saturated

• the solution is supersaturated

• the solution is unsaturated

How many grams of solute are present in 25.0 mL of a 3.50 M NaOH solution?

What is the concentration, in ppm, of a solution made with 18.5 g of NaCl in 125,000.0 g of water?

Determine the molarity of the following solution: 4.35 moles of KMnO₄ are dissolved in enough water to give 750. mL of solution