trimester two final review problems

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What is a compound?
In ionic compounds electrons are
__________
In covalent compounds electrons are
_______________
Why are ionic compounds brittle?
Which will conduct electricity when
dissolved, ionic or molecular
compounds?
Why do ionic compounds have high
melting and boiling points?
Why is a bond polar?
Draw the Lewis diagram for At2
Draw the Lewis diagram for CCl2H2
Draw the Lewis diagram for SO3-2
Draw the Lewis diagram for the
azide (N3-) ion
Draw the Lewis diagram for COH2
Draw all of the resonance structures
for CSO
Give the AB geometry and shape for
CO2
Give the geometry and shape for
CCl4
Which molecules are polar?
CO2
COS
CS2
CH3Cl
Draw a picture showing how
potassium fluoride dissolves in
water.
draw a picture showing how carbon
tetrachloride dissolves in hexane
Which compound(s) would likely
dissolve in water?
1. CH2O
2. CF4
3. Cl2
4. Cl2O
5. CaCl2
Which compound would likely
dissolve in hexane?
1. CH2O
2. CF4
3. Cl2
4. Cl2O
5. CaCl2
Give the principle by which
covalent compounds dissolve
A compound dissolves in hexane but
not in water. Which could it be?
MgI2
HI
I2
Which compound(s) will have
hydrogen bonding
CO2
CF4
CHF3
HF
CH3OH
Which compound(s) will have
dipole-dipole intermolecular
attractions
CO2
CF4
CHF3
H2S
Which compound(s) will have
dispersion intermolecular
attractions
CO2
CF4
CHF3
H2S
Rate the following in orders of
increasing intermolecular attractions
CO2
CF4
CHF3
HF
Rate the following in terms of
boiling point
PF3
P2
H2O
A compound was found to conduct
electricity in solution, dissolve in
water and is brittle it could be which
of the following
MgBr2
CBr4
Cu
N2O
A compound was found to dissolve
in hexane but not water, it can melt
in a bunsen burner flame and is soft.
It could be
CaBr2
CCI4
Ni
NiCl3
NO
Explain how a metal conducts
electricity.
Why are some molecular
compounds brittle while others are
soft?
Give the complete
equation for the
reaction of
magnesium metal
with nitric acid
Write the complete equation for
the Decomposition of magnesium
chlorate
Give net ionic equation for the
following reactions
1. Copper metal is added to lithium
nitrate
2. A solution of calcium hydroxide is
added to phosphoric acid
3. A solution of sodium phosphate
is added to a solution of iron(II)
chloride
reaction of strontium oxide with
water
reaction of a solution of ammonium
chlorate and a solution of calcium
chloride
Assign oxidation numbers for the
following:
1.
2.
3.
4.
SO2
NH3
CO2
SO4-2
Are the following oxidation reduction
reactions? Which substance is oxidized and
which is reduced?
a. C + H2SO4 CO2 + SO2 + H2O
b. HNO3 + HI NO + I2 + H2O
c. KMnO4 + HCl MnCl2 + Cl2 + H2O + KCl
=
Calculate the mass of potassium
chloride produced when 38.0 grams
of potassium chlorate decompose
according to the reaction below.
KClO3  KCl + O2
How many grams of carbon dioxide
are produced from the combustion
of 250. g of ethane, C3H8, in the
reaction
C3H8+ O2 3CO2 + 4H2O
For the reaction Pb(NO3)2 + KI 
PbI2 + KNO3, What is the percent
yield if 2.5 grams of lead nitrate
produced 2.0 grams of lead (II)
iodide.
If cyclohexanol is burned as a fuel in
the following reaction, how many
moles of carbon dioxide will be
produced from 45.0 grams of
cyclohexanol and 2.0 grams of
oxygen gas?
C6H12O + O2  CO2 + H2O
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