Equilibrium
The expression for Keq for the reaction below is __________.
4CuO (s) + CH4 (g)→CO2 (g) + 4Cu (s) + 2H2O(g)
(CO2) (H2O)2 / (CH4)
The total energy change in a system during a chemical reaction.
Gibbs Free Energy
A reaction follows the rate law: Rate = k[A]2. Which plot will give a straight line?
1/[A] versus time
This happens when Fe2+ is oxidized to Fe3+
loses 1 electron
The conjugate base of HSO4-.
SO42-
This is the principle that states a system (rxn) in equilibrium will shift direction to balance any changes that are made:
Le Chatelier's Principle
This is directly proportional to the kinetic energy of a substance.
Temperature in Kelvin
Rate=k represents reactions that don't depend on the concentration of any species, but proceed at a characteristic rate.
Zero Order
When the equation Co + Ni2+ →Co3+ + Ni is balanced, the sum of the coefficients is:
10
A buffer is made with these two related chemicals.
Weak acid or base and its conjugate salt.
As the frequency and the number of effective collisions between reacting particles increases, the rate of the reaction does this.
Increases
Reactions which increase this measurement of disorder will always be favorable.
entropy
Collisions need these two characteristics to lead to a chemical reaction.
Enough activation energy, correct orientation.
This is chlorine's oxidation number in KClO4
+7
A base with pKb 4.75 will have this relative pH when compared with a base with pKb 9.5.
pH= 12.59
Consider the following reaction at equilibrium:
2CO2(g) → 2CO(g) + O2(g) ΔH = -514 kJ
Le Chatelier's principle predicts that an increase in temperature will ________.
Shift left
This type of phase change always increases the entropy.
Solid to liquid OR liquid to gas
This is the unit for a first order reaction.
s-1 or 1/s
This reaction occurs at the cathode.
Reduction
Find the pH of a 0.20 M solution of HC2H3O2 with a Ka = 1.8 x 10-5
2.7
Doing this will move the equilibrium to produce more mols of gas.
Decrease pressure
Entropy increases, high temperature.
A species in a mechanism that is produced in an elementary step but is not in the final reaction products.
Intermediate
Unfavorable reactions will result in these changes to enthalpy and entropy.
Increase enthalpy, decrease entropy.
A weak base will have a ________ Kb and a _________ pKb.