Stoichiometry
In the reaction 2Al2O3 -> 4Al + 3O2 this is the molar ratio of Aluminum to Aluminum Oxide.
What is 1 to 1 (or 2:2)?
According to VSEPR theory, this is the predicted molecular geometry for a molecule with 3 bonding pairs and 1 lone pair on the central atom (Ex: NH3)
What is Trigonal Pyramidal?
This type of equilibrium exists when the forward and reverse reaction rates are equal.
What is dynamic equilibrium?
This term refers to the minimum energy required for a collision between reactants to result in a successful reaction.
What is Activation Energy (Ea)?
This type of intermolecular force is present in all molecules and atoms, regardless of polarity.
What are London dispersion forces (or LDFs)?
The maximum amount of product that can be formed from a given amount of reactant.
What is Theoretical Yield?
What is the approximate bond angle (in degrees) between the hydrogen atoms of H2O due to lone pair repulsion.
What is < 109.5 degrees (or 104.5)
For the exothermic reaction 2NO2(g) <-> N2O4(g) + heat, this is what happens if the temperature is increased.
The reverse reaction is favored.
If the decomposition of NO2(g) is known to be a second-order process, doubling the initial concentration of NO2 will cause the initial reaction rate to increase by this factor.
What is a factor of 4 (or quadrupled)?
Among nonpolar molecules, this factor increases the strength of London dispersion forces.
What is molar mass (or greater number of electrons/polarizability)?
The empirical formula of a compound that is 21.7% C, 9.6% O, and 68.7% F by mass.
What is C3OF6?
These two specific molecular geometries are always nonpolar, provided all terminal atoms are the same, due to the high symmetry cancelling out bond dipoles.
What are Linear and Tetrahedral?
For the reaction 2HI(g) <-> H2(g) + I2(g), if Kc = 1.39 x 10-2 at a certain temperature, this is the value of Kc for the reverse reaction (H2(g) + I2(g) <-> 2HI(g) at the same temperature.
What is 1/(1.39 x 10-2)
In a multi-step reaction mechanism, this is how the overall rate law determined.
What is by using the rate-determining (slowest) step of the mechanism?
Of the following, this substance has the highest boiling point: CH4, CH3CH3, or CH3OH.
What is CH3OH (due to Hydrogen bonding)?
The number of grams of NaN3 required to form 10.0g of nitrogen gas according to the reaction: 2NaN3(s) -> 2Na(s) + 3N2(g)
What is 15.5g?
XeF4 has an octahedral electron geometry, but because it contains two lone pairs positioned 180 degrees apart, this is its specific molecular shape.
What is Square Planar?
If the reaction quotient (Q) is calculated to be smaller than the equilibrium constant (K), this is how the reaction must proceed to reach equilibrium.
What is favoring the forward reaction/making more products?
Step 1: I2 <-> 2I (fast equilibrium)
Step 2: 2I + H2 <-> 2HI (slow)
Given these elementary steps, this is the correct rate law for the overall reaction.
What is Rate = k[I2][H2]?
This type of force, occurring between an ion and a polar molecule, is responsible for the dissolution of ionic compounds in water.
What is ion-induced dipole forces?