Intro to Solutions & Chemical Reactions

A supersaturated solution...

• Hasn't dissolved as much solute as is theoretically possible

• Is unstable because it has dissolved more solute than would be expected

• Has dissolved exactly as much solute as is theoretically possible

Select all of the following that can affect the solubility of solid solutes.

• Volume of solvent

• temperature

• stirring

• quantity of solute

How many grams of potassium chlorate can be dissolved in 100g of water at 60 degrees C?

• 30g

• 22g

• 20g

• 40g

At 40 degrees C, how much potassium chloride can be dissolved in 200g of water?

• 80g

• 40g

• 30g

• 100g

Select all of the following that are observable clues that a chemical reaction has occurred?

• Mixing of the reactants

• Color change

• formation of a solid

• release of a gas

• 4

• 3

• 1

• 2

• 10

• 5

• 1

• 2

In a chemical reaction, the total mass of the reactants and the total mass of the products must be (a)   , according to the law of conservation of mass.

• CaBr + Cl

• Will not react

• Ca + ClBr