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WorksheetsStoichiometry Quiz
Total questions: 10
Worksheet time: 13mins
Name
Class
Date
1.
You have 4.0 grams of AgNO3 and 3.5 grams of NaCl. Identify the limiting reactant in the following equation:
AgNO3 + NaCl →AgCl + NaNO3
AgNO3 + NaCl →AgCl + NaNO3
a)
AgNO3
b)
NaCl
c)
AgCl
d)
NaNO3
2.
What is the equation for percent yield?
a)
(Hypothetical yield)/(Actual yield)
b)
(Actual Yield)/(Hypothetical yield)
3.
Balance the equation:
___Cr(OH)3 + ___HClO4 ⟶ ___Cr(ClO4)3 + ___H2O
___Cr(OH)3 + ___HClO4 ⟶ ___Cr(ClO4)3 + ___H2O
a)
1 ; 3 ; 2 ; 3
b)
0 ; 3 ; 0 ; 3
c)
3 ; 0 ; 3 ; 0
d)
it's
4.
Using the following equation: Al + HCl →AlCl3 + H2 Find the amount of moles of HCl needed to react with 0.87 moles of Al. (Remember to Balance!)
a)
2.6 mol HCl
b)
3.2 mol HCl
c)
2.8 mol HCl
d)
2.45 mol HCl
5.
The coefficients in a chemical equation represent the ______.
a)
Relative number of moles of reactants and products
b)
Masses in grams of all reactants and products
c)
Number of atoms of each element in each compound in a reaction
d)
Number of valence electrons involved in a reaction
6.
Which of the following would not be studied within the topic of stoichiometry?
a)
The mole ratio of Al to Cl in the compound aluminum chloride
b)
The mass of carbon produced when a known mass of sucrose decomposes
c)
The number of moles of hydrogen that will react with a known quantity of oxygen
d)
The amount of energy required to break the ionic bonds in CaF2
7.
The combustion of propane (C3H8) in excess oxygen yields CO2 and H2O: C3H8 (g) + 5O2 (g) --> 3CO2 (g) + 4H2O (g) When 2.5 mol O2 is consumed in the reaction, __________ mol CO2 is produced.
a)
1.5
b)
2.5
c)
5.0
d)
6.0
8.
Calcium carbide (CaC2) reacts with water to produce acetylene (C2H2) : CaC2 (s) + 2H2O (g) Ca(OH)2 (s) + C2H2 (g) Production of 13 g of C2H2 requires consumption of __________ g of H2O.
a)
9.0
b)
18.0
c)
4.5
d)
4.8
9.
A balanced chemical equation allows you to determine the ______.
a)
Mole ration of any two substances in the reaction
b)
Energy released in the reaction
c)
Electron configuration of all elements in the reaction
d)
Reaction mechanism involved in the reaction
10.
What is stoichiometry?
a)
The study of plants and how they interact with their environments
b)
Geometrical analysis of solutions
c)
The study of the QUANTITATIVE relationships between reactants and products in a chemical reaction
d)
The study of the QUALITATIVE relationships between reactants and products in a chemical reaction
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