Free Printable Stoichiometry Part 1 - Composition & Reaction Mole Ratios

1.

In the compound CuSO₄, what is the ratio of copper to sulfur?

a)

1:1

b)

1:2

c)

1:3

d)

1:4

2.

In the compound CuSO₄, what is the ratio of copper to oxygen?

a)

1:1

b)

1:2

c)

1:3

d)

1:4

3.

In the compound CuSO₄, what is the ratio of copper to sulfur written as a conversion factor?

a)

1 mol Cu = 1 mol S

b)

1 mol Cu = 2 mol S

c)

1 mol Cu = 3 mol S

d)

1 mol Cu = 4 mol S

4.

In the compound CuSO₄, what is the ratio of copper to oxygen written as a conversion factor?

a)

1 mol Cu = 1 mol O

b)

1 mol Cu = 2 mol O

c)

1 mol Cu = 3 mol O

d)

1 mol Cu = 4 mol O

5.

In the compound $CuSO_4$ , which 2 fractions represent the mole ratio appropriate for use in dimensional analysis for copper and sulfur?

a)

$\frac{1\ mol\ Cu}{1\ mol\ S}$

b)

$\frac{1\ mol\ S}{1\ mol\ Cu}$

c)

$\frac{1\ mol\ Cu}{4\ mol\ S}$

d)

$\frac{4\ mol\ S}{1\ mol\ Cu}$

6.

In the compound $CuSO_4$ , which 2 fractions represent the mole ratio appropriate for use in dimensional analysis for copper and oxygen?

a)

$\frac{1\ mol\ Cu}{1\ mol\ O}$

b)

$\frac{1\ mol\ O}{1\ mol\ Cu}$

c)

$\frac{1\ mol\ Cu}{4\ mol\ O}$

d)

$\frac{4\ mol\ O}{1\ mol\ Cu}$

7.

$2\ KClO_{3_{ }}\rightarrow\ 2\ KCl\ \ +\ 3\ O_2$

In the reaction above, which 2 fractions represent the relationship between $KClO_{3_{\ ^{ }}}and\ O_2?$

a)

$\frac{2\ mol\ KClO_3}{3\ mol\ O_2}\$

b)

$\frac{3\ mol\ O_2}{2\ mol\ KClO_3}$

c)

$\frac{3\ mol\ KClO_3}{2\ mol\ O_2}\$

d)

$\frac{2\ mol\ O_2}{3\ mol\ KClO_3}$

8.

$2\ KClO_{3_{ }}\rightarrow\ 2\ KCl\ \ +\ 3\ O_2$

In the reaction above, which 2 fractions represent the relationship between $KCl\ and\ O_2?$

a)

$\frac{2\ mol\ KCl}{3\ mol\ O_2}\$

b)

$\frac{3\ mol\ O_2}{2\ mol\ KCl}$

c)

$\frac{3\ mol\ KCl}{2\ mol\ O_2}\$

d)

$\frac{2\ mol\ O_2}{3\ mol\ KCl}$

9.

$C_3H_8\ \ +\ \ 5\ O_2\ \rightarrow\ 3\ CO_2\ \ +\ 4\ H_2O$

In the reaction above, which 2 fractions represent the relationship between $C_3H_8\ and\ O_2?$

a)

$\frac{1\ mol\ C_3H_8}{5\ mol\ O_2}\$

b)

$\frac{5\ mol\ O_2}{1\ mol\ C_3H_8}$

c)

$\frac{3\ mol\ C_3H_8}{5\ mol\ O_2}\$

d)

$\frac{5\ mol\ O_2}{3\ mol\ C_3H_8}$

10.

$C_3H_8\ \ +\ \ 5\ O_2\ \rightarrow\ 3\ CO_2\ \ +\ 4\ H_2O$

In the reaction above, which 2 fractions represent the relationship between $C_3H_8\ and\ H_2O?$

a)

$\frac{1\ mol\ C_3H_8}{4\ mol\ H_2O}\$

b)

$\frac{4\ mol\ H_2O}{1\ mol\ C_3H_8}$

c)

$\frac{3\ mol\ C_3H_8}{4\ mol\ H_2O}\$

d)

$\frac{4\ mol\ H_2O}{3\ mol\ C_3H_8}$

11.

$C_3H_8\ \ +\ \ 5\ O_2\ \rightarrow\ 3\ CO_2\ \ +\ 4\ H_2O$

In the reaction above, which 2 fractions represent the relationship between $CO_2\ and\ H_2O?$

a)

$\frac{1\ mol\ CO_2}{4\ mol\ H_2O}\$

b)

$\frac{4\ mol\ H_2O}{1\ mol\ CO_2}$

c)

$\frac{3\ mol\ CO_2}{4\ mol\ H_2O}\$

d)

$\frac{4\ mol\ H_2O}{3\ mol\ CO_2}$

12.

$C_3H_8\ \ +\ \ 5\ O_2\ \rightarrow\ 3\ CO_2\ \ +\ 4\ H_2O$

In the reaction above, which 2 fractions represent the relationship between $CO_2\ and\ O_2?$

a)

$\frac{1\ mol\ CO_2}{5\ mol\ O_2}\$

b)

$\frac{5\ mol\ O_2}{1\ mol\ CO_2}$

c)

$\frac{3\ mol\ CO_2}{5\ mol\ O_2}\$

d)

$\frac{5\ mol\ O_2}{3\ mol\ CO_2}$

Stoichiometry Part 1 - Composition & Reaction Mole Ratios

Total questions: 12

Worksheet time: 12mins

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