Unit 1
How many grams are in 5 moles of Calcium?
~200.39 g of Calcium
Draw the lewis structure in the correct VSEPR shape for: NO2-. . Include bond angles.
will check answers (bent). 120 degrees.
Under what conditions do real gasses behave like ideal gasses?
High temperatures and low pressures.
Label the oxidation numbers in the following compound
K2SO4
K= +1
S= +6
O= -4
What is the total order of the following rate law
R= k[NO]2[O2]1
third order
Atoms with the smallest atomic radii will be found where on the periodic table?
Up and to the right
What are the IMFs present among C8H16OH molecules?
LDF, Dipole -Dipole, Dipole- induced dipole, H bonding. Basically everything.
What's the concentration of a NaCl solution containing 5 moles of NaCl dissolved in 2 L of water?
2.5 mol / L or 2.5 M
What are the spectator ions in the reaction between KOH and HNO3
K+ and NO3-1
What factors are important to determine if a chemical reaction will occur? Hint: Collison theory
The speed that the particles collide with
The orientation that they collide with
particles will only react if they overcome the energy curve
Ionization energy increases in the periodic table...
As you go up a group and from left to right
Is it possible to have a polar trigonal planar molecule?
Yes if not all the terminal atoms are the same
Draw the lewis structure in the correct VSEPR shape for: PO4-3 . Include bond angles.
will check answers (tetrahedral). 109.5 degrees.
What is the concentration of chloride ions in a 0.193 M solution of potassium chloride?
0.193 M
How would I determine the order of a reaction that is graphed with time and concentration
Graph three graphs
[A] vs time
ln[A] vs time
1/A vs time
Determine which is linear
What does ionization energy refer to?
Energy needed rip away a valence electron from an atom
Why is CO2 nonpolar but SO2 is polar?
The S has an extra lone pair which makes the shape bent.
Order these chemicals in terms of increasing IMF strength: CH4, C8H16OH, C8H18
CH4 < C8H18 < C8H17O
Write the half reaction of Fe + 2HCl --> FeCl2 + H2
Oxidized: Fe --> Fe+2 + 2e-
Reduced: 2H+ + 2e- --> H2
Find the rate law with the following information
Experiment [A] [B] rate
1 .20 .10 2.5
2 .20 .20 5
3 .40 .20 5
rate = k [B]
What are the two factors in determining the strength of the attractive force between two charged particles in Coulomb's Law?
Distance and size of the charge
Why is water polar but carbon dioxide is not? What IMFs do they experience
Water has a bent shape so the dipoles don't cancel each other out. Carbon is linear so the dipoles do cancel each other out.
Water hydrogen bonding
CO2 LDF
What's the bond hybridization for the central atom in BCl3 and why does it break the octet?
sp2
The boron only has 3 electrons
In a reaction between zinc and HCl, If 13.6g of zinc chloride is produced, how many grams of hydrochloric acid was reacted
7.29 g
Answer the following questions at the bottom of the page
it would not let me steal the reaction mechanism, technology defeated me