WorksheetsExam Review
Total questions: 210
Worksheet time: 5hrs 26mins
Molality (m) = moles of solute / _________________________.
kilogram of solvent
kiloliter of solvent
kilometer of solvent
ounces of solvent
molality is defined as ________________________
the moles of solute per kilogram of solvent
moles of solute per liter of solution
mass of solute/ mass of solution
mass of solute/ mass of solvent X 100
Molarity is measured in _____.
moles per g.
mols per L.
moles per mm.
moles per mL.
A solution that is considered unsaturated would _____.
be dark in color.
have a strong scent.
have a large amount of solute.
have a small amount of solute.
What do molarity and molality have in common?
Both have "moles solute" in the numerator
Both have "kg solvent" in the denominator
Both have "L solution" in the denominator
Both have "moles solution" in the denominator
What are the units of molarity?
M
m
Ml
Mr
When the solution equilibrium point is reached and no more solute will dissolve, the solution is said to be _________.
unsaturated
saturated
supersaturated
What do you call a solution that contains less than the maximum amount of solute that is capable of being dissolved?
unsaturated solution
saturated solution
supersaturated solution
insoluble solution
Which of the following best describes a supersaturated solution?
a solution that contains the maximum amount of solute that is capable of being dissolved
a solution that contains less than the maximum amount of solute that is capable of being dissolved.
a solution that contains more than the maximum amount of solute that is capable of being dissolved.
none of the above
The term molar which is used to describe a solution's concentration, is written as?
M
mol
g
g/L
Identify Cesium Nitrate
What is the correct name for this polyatomic ion: ClO–
hypochlorite
chlorite
chlorate
perchlorate
What is the correct name for this polyatomic ion: OH–
hydrogen carbonate
oxonium
hydroxide
acetate
What is the correct name for this polyatomic ion: NO3–
carbonate
hydroxide
nitrite
nitrate
What is a cation's charge?
positive
negative
neutral
depends on the element
What is an anion's charge?
positive
negative
neutral
depends on the element's charge
Is potassium a cation or an anion?
cation
anion
What is the charge of iron (III)?
+3
+2
+6
+4
What is the charge of phosphate?
-3
-2
-1
-4
Is the ion ammonium a cation or an anion?
cation
anion
Identify the compound if hydrogen and chlorine are chemically combined.
HCl
HCl7
H1Cl1
H1Cl7
What is the cation charge of chromium (VI)?
+6
-6
+24
-24
1 Mg + 2 HCl --> 1 MgCl2 + 1 H2
1 C10H8 + 12 O2 --> 10 CO2 + 4 H2O
Theoretical yield = 73g
Actual yield = 62g
Calculate the percent yield.
116%
85%
1.16%
76%
Identify the limiting reagent when 6.00 g HCl combines with 5.00 g Mg to form MgCl2.
Mg + 2HCl --> MgCl2 + H2
Mg
H2
MgCl2
HCl
Cl2 + 2 KBr → Br2 + 2 KCl
How many grams of potassium chloride can be produced from 356 g of Cl2 and 356 g of potassium bromide?
749 g
223 g
479 g
814 g
3AgNO3 + Na3(PO4) ---> Ag3(PO4) + 3NaNO3
How many grams of NO are formed if 6.30g of ammonia react with 1.80g of oxygen?
The reaction of 75.0g P4 with excess chlorine gas produces 110g PCl3 in lab. Find the theoretical yield and calculate percent yield for the reaction.
Why is it important to identify the limiting reagent?
The limiting reagent speeds up the reaction.
The limiting reagent controls the amount of product formed.
If there is no limiting reagent, the reaction will not occur.
No stoichiometry calculations can be done without a limiting reagent.
0.667 g of Al reacts with 2.53 g of CuCl2. How many grams of Al are left over after the reaction is complete?
0.328 g Al
0.338 g Al
0.667 g Al
4.98 g Al
If 0.667 g Al reacts with 2.53 g CuCl2, what is the theoretical yield of Cu?
3.21 g Cu
0.338 g Cu
1.20 g Cu
2.35 g Cu
If 0.666 g Al reacts with 2.53 g CuCl2, and 1.01 g Cu are formed in the lab, what is the percent yield of Cu?
15.8 %
84.2 %
98.4 %
100.0 %
Fill in the blank. (Copper has a charge of +2)
Cu+ AgNO3--> Ag + _____
Cu(NO3)2
CuNO3
CuAg
Cu
Predict the products for this equation.
(Zn with a charge of +2)
Zn + H2SO4 -->
Zn(SO4)2 + H
ZnSO4 + H2
ZnSO4 + H4
Complete the balanced equation for this Double Replacement reaction.
3 NaOH + Fe(NO3)3 -->
NaFe + OH(NO3)3
2NaNO3
3 NaNO3 + Fe(OH)3
Predict the products for the this Single Replacement reaction:
K + HCl -->
KCl + H2
KHCl
KH + Cl2
Predict the products for the this Single Replacement reaction:
Mg + CuCl2 -->
MgCl2 + Cu
Mg + Cu
MgCu + Cl2
Predict the products for the this Double Replacement reaction:
AgNO3 + KCl -->
AgCl + KNO3
AgK + ClNO3
KAg + NO3Cl
If an element is diatomic it should have a subscript of___
1, always
2, only when it is by itself
it shouldn't have a subscript, it should have a coefficent
What is the charge of Iron in this compound. (Hint: think criss cross method):
Fe3(PO4)2
+3
+2
+1
What is the correct way of representing hydrogen gas alone, in a reaction?
2H
H
H2
What are the products of this Single Replacement reaction?
Zn(s) + H2SO4(aq) -->
ZnH2SO4
ZnSO4 + H2
No reaction
To predict if a single replacement reaction will take place you should use the____________ __________
Activity series
Solubility Chart
Periodic Table
When predicting a double replacement reaction we use the__________ ________ to help us determine if a solid is produced or not
Activity series
Solubility Chart
Periodic Table
What is the name for the solid formed during a reaction?
Precipitate
Rocks
Aqueous
The symbol for a substance dissolved in solution is ______
(s)
(l)
(aq)
Is the following substance soluble or insoluble?
NaNO3
Soluble
Insoluble
Is the following substance Soluble or insoluble?
AlPO4
Soluble
insoluble
Ca3(PO4)2 + 3 H2SO4 → 3 CaSO4 + 2 H3(PO4)
_N2 + _H2 --> _NH3
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?
__CH4 + __O2 --> __CO2+ __H2O
What type of reaction is Fe + Cl2 → FeCl3
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is C2H2 + O2 → CO2 + H2O
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is BF3 + Li2SO3 → B2(SO3)3 + LiF
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is Ag2O → Ag + O2
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is C5H10 + O2 → CO2 + H2O
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is Zn + HCl → H2 + ZnCl2
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is H2 + N2 → NH3
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is (NH2)3PO4 + Pb(NO3)4 → NH4NO3 + Pb3(PO4)4
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is FeBr3 + H2SO4 → HBr + Fe2(SO4)3
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is Fe + H2SO4 → H2 + FeSO4
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is Mg + Br2 → MgBr2
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is KClO3 → KCl + O2
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is K2CO3 → K2O + CO2
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is CH4 + O2 → CO2 + H2O
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is NaOH + HCl → H2O + NaCl
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What type of reaction is SeCl6 + O2 → SeO2 + Cl2
Synthesis
Decomposition
Single Replacement
Combustion
None of these
What is the colour of methyl orange an acid ?
Red
Yellow
Pink
Colourless
What is the colour of phenolphthalein an acid?
Pink
Yellow
Orange
Colourless
What is the colour of phenolphthalein in a base ?
Pink
Blue
Red
Colourless
What is the colour of methyl orange in a base ?
Pink
Blue
Yellow
Colourless
According to Arrhenius, what is the definition of an ACID?
a substance that contains hydroxide and ionizes to produce OH-
a substance that contains hydrogen and ionizes to produce H+
a substance that contains hydrogen and ionizes to produce OH-
a substance that contains hydroxide and ionizes to produce H+
According to Bronsted-Lowry, what is the definition of an BASE?
a substance that donates a hydrogen (H+) ion
a substance that donates a hydroxide (OH-) ion
a substance that accepts a hydrogen (H+) ion
a substance that accepts a hydroxide (OH-) ion
What is being donated/accepted between conjugate acid-base pairs?
a hydrogen (H+) ion
a hydroxide (OH-) ion
water
a neutron
What is the conjugate base in the following reaction?
HCO3-
HCl
H2CO3
Cl-
An arrhenius acid
produces hydroxide ions in a solution
is a proton donor
produces hydrogen ions in a solution
is a proton acceptor
An arrhenius base
produces hydroxide ions in a solution
is a proton donor
produces hydrogen ions in a solution
is a proton acceptor
Acid-base conjugate pairs differ by a single
Electron
Proton
Neutron
Oxygen
For a solution, pH + pOH =
7
14
1.0 x 10-14
-log (1.0 x 10 -14)
If the pH of a solution is 4.0, what is the pOH?
4.0
10.0
1.0 x 10 -4
cannot be determined from the information
If the [H3O+] of a solution is 1 x 10-3 M, the pH is
11
-3
3
1
What is the pH of a solution that has a [H+] of 2.5 x 10-5?
4.60
2.5
5.0
7
What is the [H+] if the pH is 4.0?
1.0 x 10-10 M
1.0 x 10-14 M
1.0 x 10-4 M
1.0 x 10-7 M
Acids have a ______ pH and a _________ pOH
low, high
high, low
An acid will not have a pOH
Find the pH of a solution with [OH-] = 8.41 x 10-4.
3.08
10.92
9.88
11.23
If the [H3O+] of a solution is 9.3 x 10-3 M, the pOH of the solution will be
2.03
1.02
11.97
12.98
0.00020 M. FInd the pH of orange juice.
Which of the following correctly identifies an Acid-Base Pair?
HH4+ , OH-
H2O , OH-
CaCO3 ,CaCl2
HNO3 , H2SO4
Given the reaction above, which compound is the bronsted-Lowry Acid?
NH3
HCl
NH4+
Cl-
Given the reaction above, which compound is the bronsted-Lowry Conjugate base, if HCl is the acid?
NH3
NH4+
Cl-
Given the information from the previous three questions, what is NH4+ classified as?
Acid
Base
Conjugate Acid
Conjugate Base
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
Which compound is the conjugate base?
HCO3- + HCl ==> H2CO3 + Cl-
HCO3-
HCl
H2CO3
Cl-
NH3 + H2O --> NH4+ + OH-
What is H2O in this reaction?
acid
base
conjugate acid
conjugate base
In the reaction below, H2O is a(n):
H2SO3 + H2O --> H3O+ + HSO3-
base
acid
conjugate acid
conjugate base
Given the equation:
H2SO4 + H2O ↔ H3O+ + HSO4- 1
What is the conjugate acid?
H2SO4
H2O
H3O+
HSO4- 1
Which of the following is a neutralization reaction?
2Na + Cl2 → 2NaCl
CH4 + 2O2 → CO2 + 2H2O
HCl + KOH → KCl + H2O
CaCO3 → CO2 + CaO
HCl + Zn --> ZnCl2 + H2
Sulphuric acid + sodium carbonate
-->
Hydrochloric acid + magnesium hydroxide -->
--sulfuric acid--
--nitric acid--
HClO4, HClO3
do not break apart into ions (non-electrolyte)
partially break apart into ions (weak electrolyte)
completely break apart into ions (strong electrolyte)
None of these
--hydrochloric acid--
--hydrobromic acid--
--hydroiodic acid--
Which of the following is NOT a strong acid
Sulfuric acid
Hydrochloric acid
Perchloric acid
Hydrofluoric acid
Which of the following is a weak acid
HClO3
H2S
HNO3
HBr
Which of the following is a weak base
Sodium hydroxide
Rubidium hydroxide
Magnesium hydroxide
Strontium hydroxide
Which of the following is NOT a strong base
Be(OH)2
CsOH
KOH
NaOH
Any substance that has mass and occupies space is called____________________
atom
matter
volume
Which state of matter has a definite shape and volume?
solid
liquid
gas
Molecules in _______________are very loosely packed.
solids
liquids
gases
The air you breathe is in which state?
gas
liquid
solid
These particles are representing which state of matter?
gas
solid
liquid
These particles are representing which state of matter?
liquid
solid
gas
Matter exist in _________________states.
Two
Three
Four
Five
What is energy?
Something you get from sleeping
The ability to do work or supply heat
A stadium in Houston
A magical power
What is thermochemistry?
study of heat changes that occur during a chemical reaction & physical changes of state
the study of heat and chemistry
the study of heat
the study of chemistry
What is chemical potential energy?
Energy from chemicals
Energy to make chemicals
Energy stored in chemical bonds
Energy from the sky
Which one is temperature change NOT dependent on
amount of heat added
Humidity levels
mass of the substances
composition of the substance (specific heat)
Specific heat of water is...
4180 J/g*C
41.80 J/g*C
4.184 J/g*C
0.4184 J/g*C
g ∘CJ or g ∘Ccal
c
g or kg
m
ΔT
C or K
c
J or cal, kJ or Kcal
How much heat, in calories, is needed to raise the temperature of 125.0 g of lead (c lead= 0.130 J/g°C) from 17.5°C to 41.1°C?
91.7 cal
9.17 cal
917 cal
917.0 cal
What are chemical reactions that absorb energy?
endothermic
fast
slow
exothermic
What is the formula for calculating heat?
q = mcΔT
H = ΔH x moles
H = ΔH x grams
products - reactants
What are the two main types of energy?
endothermic and exothermic
spontaneous and nonspontaneous
potential and kinetic
entropy and enthalpy
What does temperature measure?
heat
average kinetic energy
space
time
How much heat does an aluminum block absorb if 10.00 grams is heated from 25.0oC to 50.0oC? *Specific heat of aluminum is 0.900 J/goC
450 J
-450 J
225 J
-225 J
A 24.0 gram sample of copper was heated from 25.0oC to 500.0oC, 4378 J of heat were absorbed, what is the specific heat of copper?
0.384 J/g°C
49909200 J/g°C
2.60 J/g°C
8.77 J/g°C
Releasing heat into the surroundings occurs during an ___________________ reaction.
Exothermic
Endothermic
Kinetic Energy
Thermal Energy
Which law states that energy cannot be created nor destroyed, but it can be transformed or transferred?
Dalton's Law
law of conservation of energy
Hess's Law
E=mc^2
A gas has ________ kinetic energy than a liquid.
more
less
When water evaporates, the process is...
endothermic
exothermic
When wood is burned in a campfire, the process is...
endothermic
exothermic
For an exothermic reaction, ΔH is...
negative
positive
For an endothermic reaction, ΔH is...
negative
positive
