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Worksheets

Limiting Reactants

Total questions: 6

Worksheet time: 57mins

Name
Class
Date
1.

What is a limiting reactant?

a)

the reactant with the smallest mass present

b)

the reactant that determines how much product can be made

c)

the reactant with the smallest number of moles present

d)

the reactant with the largest mass present

2.

P4 + 3O2 --> P4O6

How many moles of P4O6 can be made if 3 moles of P4 react with 6 moles of O2?

a)

4 moles

b)

3 moles

c)

2 moles

d)

1 mole

3.

Fe + S --> FeS

If 7.62g Fe react with 7.62g S, what is the limiting reactant?

a)

Fe

b)

S

c)

FeS

d)

there is no limiting reactant

4.

CH4 + 2H2O --> CO2 + 4H2

What is the limiting reactant when 10.0 g CH4 reacts with 15.0 g H2O?

a)

H2

b)

CH4

c)

CO2

d)

H2O

5.

4NH3 + 5O2 --> 4NO + 6H2O

How many molecules of NO are formed if 6.30g of ammonia react with 1.80g of oxygen?

a)

3.79 x 1024 molecules NO

b)

1.08 x 1024 molecules NO

c)

2.23 x 1023 molecules NO

d)

2.78 x 1023 molecules NO

6.

2 NaCl + Pb(NO3)2 --> 2 NaNO3 + PbCl2

How many grams of lead II chloride are produced from the reaction of 1.58 x 1023 f.u.n. of NaCl and 60.8 g of Pb(NO3)2?

a)

21.5g

b)

51.1g

c)

43.4g

d)

36.4g