Lesson 21. Calculating concentration

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Slide 1: Slide
ChemSecondary Education

This lesson contains 33 slides, with interactive quizzes and text slides.

Items in this lesson

Slide 1 - Slide

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Slide 2 - Poll

Slide 3 - Slide

Slide 4 - Slide

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Slide 6 - Slide


______ is a reactant that is not in excess in a chemical reaction.
A
Limiting reactant
B
Limiting condition
C
Catalyst

Slide 7 - Quiz


Enquiry questionDoes a chemical reaction stop when the reactant is used up?
YES
NO

Slide 8 - Poll

Slide 9 - Slide

Slide 10 - Slide


Agree or disagree. The amount of product is directly proportional to the amount of the limiting reactant.
AGREE
DISAGREE

Slide 11 - Poll

Slide 12 - Slide

Slide 13 - Slide

Question: Which reactant is in excess and which is the limiting reactant?

Slide 14 - Slide

STEP 1. Write the balanced symbol equation.
STEP 2. Determine the molar ratio.
STEP 3. Calculate the moles of each reactant.
STEP 4. Compare the moles.

Slide 15 - Slide

Slide 16 - Slide


______ a solid substance that dissolves in a liquid.
A
Solute
B
Solvent
C
Solution
D
Opaque

Slide 17 - Quiz


_____ is the liquid that dissolves the solid substance.
A
Solute
B
Solvent
C
Solution
D
Opaque

Slide 18 - Quiz


Most chemical reactions occur between solutes which are dissolved in solvents. Which of the following is NOT an example of a solvent?
A
silver nitrate
B
oil
C
water
D
ethanol

Slide 19 - Quiz


______ refers to the amount of solute there is in a specific volume of the solvent.
A
Solubility
B
Concentration
C
Insoluble
D
Saturation

Slide 20 - Quiz


The greater the amount of solute in a given volume, the _________ the concentration.
A
lesser
B
greater
C
more saturated
D
less saturated

Slide 21 - Quiz


Which of the following units can be used to express the amount of solute?
A
grams
B
moles
C
both A and B
D
liters

Slide 22 - Quiz


Which of the following units can be used to express the concentration of a solution in 1 L of solvent?
A
g / dm^3
B
moles / dm^3
C
moles / mL
D
both A and B

Slide 23 - Quiz

Slide 24 - Slide



Enquiry question
Which solution is more concentrated?

Slide 25 - Open question

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Slide 30 - Slide

Self - Evaluation
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Slide 31 - Poll

Slide 32 - Slide

  • Monday - Lesson 22 | Titration Calculations
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Slide 33 - Slide