Molarity fun walkthrough lab

Molarity fun walkthrough lab

step 1

• assuming Kool Aid is just sugar C₁₂H₂₂O₁₁

Fill in the Blank

what is the molecular weight of sugar/Kool-aid? C₁₂H₂₂O_{11 (ones place)}

Step 1

• measure 100 ml of water into a plastic cup, and mark the line

• take 1 spoonful of Kool-aid and measure the mass

Open Ended

mass of kool aid

Step 2

calculate the # of moles in your sample

 $grams\times\frac{moles}{342\ g}$  

Open Ended

moles of Kool-aid

Open Ended

What is your molar concentration?

Step 3

How many grams are needed to make 1 M concentrated solution using 100 ml (1000ml/L)

Open Ended

How many grams of Kool-aid are needed to make a 1M concentration?

Make a .5 Molar Concentration

Open Ended

How much solute is needed in grams?

Poll

Taste Test .5 Molar concentration

• gross

• not too bad

• drinkable

• great

Make a .2 Molar Concentration

Open Ended

How much solute was added in grams

Poll

Taste Test

• gross

• not too bad

• drinkable

• great

dilution

• decreasing the concentration of a solute in a solution

• increasing solvent to solute ratio

Dilutions

• M₁V₁=M₂V₂

• initial molarity and volume

• Final molarity and volume

Multiple Choice

If I have a .5 M HCL and a 6 M HCL which has a higher concentration of HCL?

• 6

• .5

Multiple Choice

If I added 1L of water to 1 L of 6M concentration of HCL what would the resulting concentration be?

• 3 M

• 2 M

• 6 M

• .6 M