Free Printable 12-CPC Stoichiometry Review

Worksheets

12-CPC Stoichiometry Review

Total questions: 17

Worksheet time: 2hrs 21mins

Name

Class

Date

Balance this reaction: ____ RbNO₃ + ____ BeF₂ ----> ____ Be(NO₃)₂ + ____ RbF

1,1,1,1

1,2,1,1

2,1,1,2

2,1,2,1

2 KClO₃ → 2 KCl + 3 O₂
How many moles of oxygen are produced when 6.7 moles of KClO₃ decompose completely?

6.7 mol

1.0 mol

10.1 mol

4.5 mol

What is the molar mass of table salt (NaCl)?

116.89 g/mol

35.45 g/mol

22.99 g/mol

58.44 g/mol

What is the molar mass of NaOH?

40.00 g/mol

38.99 g/mol

23.99 g/mol

57.00 g/mol

Using the following equation:
Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron (Fe) can be made from 6 moles H₂?

4 moles Fe

6 moles Fe

9 moles Fe

2 moles Fe

2Al + 3H₂SO₄ -> Al₂(SO₄)₃ + 3H₂
How many grams of aluminum sulfate would be formed if 250g H₂SO₄ completely reacted with aluminum?

0.85 g

290 g

450 g

870 g

1 mole of any gas at STP has a volume of ______________________.

22.4 liters

44.2 liters

6.02 x 10²³ liters

2.4 liters

2CO + O₂−-> 2CO₂
How many liters of carbon dioxide are produced from 10L of carbon monoxide?

10 L

20 L

1 L

5 L

1Mg + 2H₂O --> Mg(OH)₂ + H₂

What volume of hydrogen will be produced at STP by the reaction 67.3 g of magnesium?

62.0 L

0.12 L

2.77 L

1.15 L

10.

The limiting reactant

slows the reaction down

is used up first

is the reactant that is left over

controls the speed of the reaction

11.

When does a chemical reaction stop?

When the lab is finished

When the excess reactant is used up

When the limiting reactant is used up

Chemical reactions never stop

12.

Use the equation 2 Al + 3 Cl₂ ---> 2 AlCl₃. If 2 moles of aluminum and 2 moles of chlorine are reacted, identify the limiting reactant.

AlCl3

Cl2

13.

CuCl₂ + 2NaNO₃ --> Cu(NO₃)₂ + 2NaCl

If 15.0 grams of CuCl2 react with 20 g of NaNO3, Which one is the limiting reactant?

copper(II) chloride

copper(III) chloride

sodium nitrate

sodium(I) nitrate

14.

4NH₃+ 5O₂--> 4NO + 6H₂O
How many grams of NO are formed if 6.30g of ammonia react with 1.80g of oxygen?

0.37g

0.045g

1.35g

11.1g

15.

CuCl₂ + 2NaNO₃ --> Cu(NO₃)₂ + 2NaCl

If 15.0 grams of CuCl2 react with 20 g of NaNO3, how much NaCl can be formed?

13.0 g of NaCl

98 g of NaCl

26 g of NaCl

17.4 of NaCl

16.

CuCl₂ + 2NaNO₃ --> Cu(NO₃)₂ + 2NaCl

If 15.0 grams of CuCl2 react with 20 g of NaNO3, How much of the excess reactant is left over in this reaction?

0.9 g of sodium nitrate

34 g of sodium nitrate

16 g of copper(II) chloride

16 g of sodium nitrate

17.

3CaCO₃ + 2FePO₄ --> Ca₃(PO₄)₂ + Fe₂(CO₃)₃

Assuming we start with 100 g of CaCo3 and 45 g of FePO4, How much of the excess reactant is left over after the reaction is complete?

57.3 g of sodium phosphate

54.0 g of calcium carbonate

25 g of calcium carbonate

16.9 g of iron(III) carbonate

100 %

12-CPC Stoichiometry Review

Total questions: 17

Worksheet time: 2hrs 21mins

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