Reaction Kinetics and Thermochem
This is a word describing a reaction in which the chemical products have more energy than the reactants.
What is endothermic?
This word describes a reaction whose products can turn back into its original reactants.
What is Reversible?
This is a unit of measurement that is used to measure solubility.
What is [grams or moles] per [mL or L]?
In aqueous solutions, the study of acids and bases is basically the study of this chemical.
What is water?
This is, specifically, what pOH is a measure of.
What is the concentration of OH-?
This is something that decreases when a catalyst is added to a reaction.
What is activation energy?
When a system appears to not be changing anymore, but actually, there's still tons of stuff happening inside it, we call it this:
What is dynamic equilibrium?
This two-word term refers to the principle behind why solutes have a "maximum concentration".
What is Solubility Equilibrium?
or, What is [a quick explanation of how eventually, the rate of crystallizing becomes equal to the rate of dissolving]?
This is the fancy name of the conjugate acid of water.
What is hydronium?
These are the TWO mathematical relationships involving the number 10-14.
What is [H3O+]*[OH-] and Ka*Kb?
These are two examples of things that would decrease the rate of particle collisions.
What are decreasing temperature / concentration / pressure / surface area?
This is the CORRECT SPELLING for the last name of a man who revolutionized humanity's understanding of chemical equilibrium.
What is LE CHATELIER?
This is the molar solubility of a chemical: MX, whose Ksp = 4.83 x10-8.
what is 2.19e-4M?
This is a molecule which is both amphiprotic and polyprotic.
What is [H2C6H5O7- or H2PO4-]?
This is the identity and quantity (in moles) of a chemical, which when added to a solution containing 0.44 moles of HCl, would create a buffer solution.
What is 0.88 moles of [any weak base]?
What is having the highest activation energy?
For the reaction: heat + 2NH3 <--> 3H2 + N2 ,
this sudden change to the system will instantly cause all reaction rates to change, and the equilibrium will shift towards N2.
What is an increase in temperature?
This is a chemical which, when added to a saturated solution of PbSO4 , would cause PbSO4 (s) to precipitate.
What is [anything soluble that contains Pb2+ or SO42- eg. lead nitrate or sodium sulfate]?
This is the pH range of a solution which turns very yellow when Bromcresol Green is added OR when Orange IV is added.
What is 2.8 - 3.8?
These are a pair of chemicals, which, once mixed to their equivalence point, have a resulting pH of HIGHER than 7...
What is [any strong base + any weak acid]?
The reverse activation energy is 65 kJ. The enthalpy of the forwards reaction is +20 kJ. A catalyst is then added which decreases the activation energy by 15 kJ. The answer is the catalyzed forwards activation energy.
What is 70kJ?
For the reaction 2A <-> 3B, the initial concentration of A is 2.7M and the initial concentration of B is unknown. The Keq is 1.00, though, and the reaction shifted towards products. Thus, the initial concentration of B must have been _________________________ (to 3 decimal places)
What is AT MOST 1.94M?
If you didn't say AT LEAST or AT MOST or the units, get rekt lol
These are two chemicals which, when added one at a time with filtration in between, would let you see if Sr2+ and/or Ag+ are present in a solution.
What is NaCl and Na2SO4?
This is what HC6H5O7- would most likely do to water, and also some evidence based on specific Ka and Kb values.
What is:
HC6H5O7- would protonate water/behave as an acid, because its Ka (4.1e-7) is larger than its Kb (5.9e-10).
This is the pOH of the resulting solution after 25mL a 0.27M solution of NH3 (aq) is neutralized to equivalence using 25mL of HCl.
What is 8.94?