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Molarity fun walkthrough lab

Molarity fun walkthrough lab

Assessment

Presentation

Chemistry

10th - 11th Grade

Practice Problem

Easy

NGSS
HS-PS1-5, HS-PS1-7

Standards-aligned

Created by

Stacy King

Used 32+ times

FREE Resource

9 Slides • 11 Questions

1

Molarity fun walkthrough lab

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2

step 1

  • assuming Kool Aid is just sugar C12H22O11

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3

Fill in the Blank

what is the molecular weight of sugar/Kool-aid? C12H22O11 (ones place)

4

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

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5

Open Ended

mass of kool aid

6

Step 2

calculate the # of moles in your sample

 grams×moles342 ggrams\times\frac{moles}{342\ g}  

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7

Open Ended

moles of Kool-aid

8

Open Ended

What is your molar concentration?

9

Step 3

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

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10

Open Ended

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

11

Make a .5 Molar Concentration

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12

Open Ended

How much solute is needed in grams?

13

Poll

Taste Test .5 Molar concentration

gross

not too bad

drinkable

great

14

Make a .2 Molar Concentration

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15

Open Ended

How much solute was added in grams

16

Poll

Taste Test

gross

not too bad

drinkable

great

17

dilution

  • decreasing the concentration of a solute in a solution

  • increasing solvent to solute ratio

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18

Dilutions

  • M1V1=M2V2

  • initial molarity and volume

  • Final molarity and volume

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19

Multiple Choice

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

1

6

2

.5

20

Multiple Choice

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

1

3 M

2

2 M

3

6 M

4

.6 M

Molarity fun walkthrough lab

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