Equilibrium Basics
Acids and Bases
Titrations and Solubility
Chemistry Pit #1
Chemistry Pit #2
100
What is the equilibrium expression for aA + bB ---> cC + dD
Keq = [C]c[D]d/[A]a[B]b
100
Difference between a strong acid and a weak on is that a strong acid __________.....
Completely dissociates in solution.
100
What is the Ksp expression for MgCl2?
Ksp = [Mg2+][Cl-]2
100
What do almost all elements found since 1940 have in common.
They rapidly decay.
100
What is elementary particle that makes up all hadrons called?
Quark
200
Name 6 different K's
Keq, Kc, Kp, Ka, Kb, Ksp
200
Ka = 1.48 x 10-83, what is Kb
Kb = 6.8 x 1068
200
What is the Henderson-Hasselbalch equation? (2 forms)
pH = pKa = log([A-]/[HA]) ........ pH = pKa = log([HB+]/[B])
200
In an amino acid there are 4 key elements: carbon, hydrogen, nitrogen and ________.
Oxygen
200
What is the softest material according to the Mohs scale?
Talcum powder
300
Given the reaction A(g) + B(g) <---> C(g) what would happen to the equilibrium if [B] decreased?
Shift to the reactant's side (left side).
300
Name every strong acid
HCl, HClO3, HClO4, HI, HBr, HNO3 HIO4 H2SO4
300
45 mL of nitrous acid is titrated with a .100 M solution of NaOH. The equivalence point is reached after 24.3 mL of the NaOH solution was added. What was the original concentration of nitrous acid?
.054 M
300
Which element was originally going to be named "Niton" (Nt)?
Radon
300
A miner is going to mine some bauxite, what element would he be mining?
Aluminum
400
What would happen to the reaction A(g) + B(g) <---> C(g) if the pressure was increased.
Equilibrium would shift to the products side (right side).
400
What is the pH of a solution of .395769047 M HBr
pH = .402558174
400
Is the following graph represent a strong or weak acid?
Strong
400
Per Teodor Cleve discovered holmium, which got its name from Teodor's hometown. What was his home town.
Stockholm
400
What material is used to create the tip of matches
Red phosphorous
500
The Ka for acetic acid is 1.8 x 10-5, is the concentration of all the ions present are .20 M what way will the equilibrium shift.
Q < K, thus equilibrium will shift to the reactant's side (left side).
500
What is the pH of a .20 M solution of acetic acid?
pH = 2.7
500
Calculate the pH of a buffer solution with .20 M HC2H3O2 and .50 M C2H3O2-. The Ka of acetic acid is 1.8 x 10-5
pH = 4.7
500
Hydrogen has three isotopes each with there own symbol, what is the name of the isotope with the symbol Q?
Quadrivium
500
Platinum originally got it's name because it was found in a mine with ______.
Silver