Balancing Equations
N2 + H2 --> NH3
N2 + 3H2 --> 2NH3
Identify the intermolecular forces present in HF
Dispersion, dipole-dipole, and hydrogen bonding
hHow many moles of water, H2O, contain 2.60 x 1023 molecules of water?
0.432 moles of H2O
Name MgBr2
Magnesium bromide
Predict geometry and shape
CH2O
Geometry --> trigonal planar
Shape --> trigonal planar
Na + H2O --> NaOH + H2
2Na + 2H2O --> 2NaOH + H2
Determine the strongest intermolecular force in NaCl
Ionic bond
Calculate molar mass of Li2CO2
73.89 g Li2CO3
Write formula of diphosphorus pentoxide
P2O5
Predict geometry and shape
NH3
Geometry --> tetrahedral
Shape --> trigonal pyramidal
Cr2O3 + CCl4 --> CrCl3 + COCl2
Cr2O3 + 3CCl4 --> 2CrCl3 + 3COCl2
Rank the following from highest to lowest intermolecular forces
ICl, CH4, H2O
H2O (hydrogen bonding), ICl (dipole-dipole), CH4 (dispersion)
A salt shaker contains 73.7 g of NaCl. How many moles are present in NaCl?
1.26 moles of NaCl
Name N2O3
Dinitrogen trioxide
Predict geometry and shape
BH3
Geometry --> trigonal planar
Shape --> trigonal planar
Fe2O3 + C --> Fe + CO2
What type of reaction is this?
2Fe2O3 + 3C --> 4Fe + 3CO2
Single Replacement
Rank lowest to highest boiling point
HF, HBr, CH3OH
CH3OH (dispersion), HBr (dipole-dipole), HF (hydrogen bonding)
How many grams of CO2 are produced when 54.6 g of C2H2 is burned?
2C2H2 (g) + 5O2 (g) --> 4CO2 (g) + 2H2O (g)
185 g CO2
Name Fe(NO3)3
Iron (III) nitrate
Predict geometry and shape
ClO2-
Geometry --> tetrahedral
Shape --> bent
KClO3 --> KCl + O2
What type of reaction is this?
2KClO3 --> 2KCl + 3O2
Decomposition
Rank the following from weakest to strongest and determine the highest intermolecular force present in each.
CH3OH, CH3CH3, CF4
CH3CH3 (dispersion), CF4 (dipole-dipole), CH3OH (hydrogen bonding)
How many grams of HNO3 are produced from 8.25 g of NO2?
NO2 (g) + H2O (l) --> HNO3 (aq) + NO (g)
7.52 g HNO3
Write formula for aluminum hydroxide
Al(OH)3
Predict geometry and shape
PO2+
Geometry --> linear
Shape --> linear