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WorksheetsTypes of Reactions and Stoichiometry Review
Total questions: 20
Worksheet time: 37mins
In stoichiometry problems, usually the first thing you do when starting the calculations is
convert given quantities to masses
convert given quantities to volumes
convert given quantities to moles
convert to wanted moles using mole ratio
Which is the following is NOT a reason why actual yield is less than theoretical yield?
competing side reactions
impure reactants present
loss of product during purification
conservation of mass
What type of reaction is recognized by a single element and a compound?
Combustion reaction
Combination reaction
Single replacement reaction
Decomposition reaction
What type of reaction is recognized by a single product?
Combustion reaction
Combination reaction
Single replacement reaction
Decomposition reaction
What type of reaction is recognized by a single reactant?
Combustion reaction
Combination reaction
Single replacement reaction
Decomposition reaction
What type of reaction is recognized by the two reactants being aqueous solutions?
Double replacement reaction
Combination reaction
Single replacement reaction
Decomposition reaction
For the complete combustion of a hydrocarbon the products will always be ...
Carbon monoxide and water
carbon and water
carbon dioxide and water
carbonate and water
Which of the following is the correct, balanced equation for the decomposition of Calcium Oxide into its elements?
Ca2O(s) → Ca(s) + O2(g)
2CaO(s) → 2Ca(s) + O2(g)
CaO2(s) → Ca(s) + O2(g)
CaO(s) → Ca(s) + O2(g)
Which of the following is correct for iron(III) is placed in copper(II) chloride?
Fe(s) + CuCl2(aq) → Cu(s) + FeCl2(aq)
Fe(s) + 2CuCl(aq) → 2Cu(s) + FeCl2(aq)
2Fe(s) + 3CuCl2(aq) → 3Cu(s) + 2FeCl3(aq)
3Fe(s) + 2CuCl2(aq) → 2Cu(s) + 3FeCl3(aq)
The reason chemical equations are balanced is
to satisfy the Law of Conservation of Mass.
to satisfy the Law of Definite Proportions.
to be prepared for stoichiometry.
to satisfy the Law of Multiple Proportions.
The complete, balanced equation for the reaction of chlorine gas and sodium fluoride is
Cl2(g) + 2NaFl(aq) → 2NaCl(aq) + Fl2(g)
Cl(g) + NaFl(aq) → NaCl(aq) + Fl(g)
Cl2(g) + NaFl(aq) → no reaction
Cl2(g) + NaFl2(aq) → 2NaCl2(aq) + Fl2(g)
Which of the following is NOT true about limiting and excess reagents?
Some of the excess reagent is left over after the reaction is complete.
A balanced equation is necessary to determine which reactant is the limiting reagent.
The amount of product obtained is determined by the limiting reagent.
The reactant that has the smallest given mass is the limiting reagent.
Which of the following symbols is NOT explained properly
(aq), dissolved in water
(s), soluble
(g), gas
(l), liquid
In every reaction, what is conserved?
mass only
mass and molecules
molecules and moles
mass and atoms
Which of the following is NOT the correct in terms of both the chemical formula and its state when in water
Copper(II) chloride is CuCl2 (aq)
Lead(IV) sulfate is PbSO4 (s)
Silver chloride is AgCl(s)
Potassium chlorate is KClO3(aq)
An equation in which each side has the same number of atoms of each element is
balanced equation
skeleton equation
chemical equation
bones equation
Which of the following is correct for the reacting solid sodium in water
Na(s) + H2O(l) → no reaction
Na(s) + H2O(l) → NaO(aq) + H2(g)
Na(s) + H2O(l) → NaOH(aq) + H2(g)
4Na(s) + 2H2O(l) → 4NaH(aq) + O2(g)
The symbol ⇄ indicates
the reaction is reversible
the reaction may or may not happen
the reaction is in equilibrium
there is no reaction
Which of the following statements is NOT true about what happens in all chemical reactions?
New atoms are formed as products.
The bonds of the reactants are broken and new bonds of the products are formed.
The ways in which atoms are joined together are changed.
The starting substances are called reactants.
The calculation of quantities in chemical equations is called
percent composition
percent yield
dimensional analysis
stoichiometry
