Lab Math
QC & Predictive Statistics
Chromatography
Chemical Equilibrium
Acid Base
100
Calculate mean and SD Scale and label x-axis scale and label 7-axis draw lines for mean and control limits
What are steps to create a Levey Jennings control chart
100
The ratio of density of a compound whan compared to the density of water
What is specific gravity
100
Dispersive (van der Waals), Dipolar, Hydrogen-bonding, Dielectric interactions
What are the 4 forces of attraction or polarity
100
The ratio that describes the extent of completion for a chemical reaction
What is Equilibrium Constant (Keq or K)
100
A solution that can absorb moderate amounts of acid or base without significant change in pH
What is a buffer
200
The number of grams proportional to the atomic or molecular weight of a substance
What is a Mole
200
-log[H+]
What is pH
200
The microscopic segment of a column where perfect equilibrium is assumed to exist between the solute in the mobile and stationary phases
Theoretical plate
200
The measure of the disorder or randomness in a sytem or reaction
What is Entropy
200
Substances that only partially ionize or dissociate; they are only slightly capable of generating ions in solution
What are weak electrolytes
300
The mass in grams of one mole of a substance
What is molecular weight
300
The weight of NaOH needed to prepare 200 mL of 50% (w/v)
What is 25g NaOH
300
The stationary phase has a formal charge and the solute mixtures are separated by the magnitude and charge of the ionic species
What is electrostatic or ion exchange chromatography
300
The equilibrium between an ionic solid and its sataurated solution (in dynamic equilibrium between dissolved and undissolved)
What is a Solubility Constant (Ksp)
300
The definition of the Henderson Hasselbach equation solving for pH
What is pH = pKa - log [HA] or pH = pKa + log [A-] [A-] [HA]
400
A solution that contains 1 mole of solute in 1 liter of solution
What is Molarity or molar solution
400
the mass of KOH that is 90% pure needed to prepare 1.0L of a 0.25 M solution of KOH (MW=56.1 g/mole)
What is 15.58 g KOH
400
Separation of molecules on the basis of size and shape
What is steric exclusion
400
The concentration of Ag+ and CrO4= with a Ksp of 1.1 x 10 to the minus 12. Ag2Cro4(s) = 2Ag+(aq) + CrO4=(aq)
What is 1.3 x 10 to minus 4 and 6.5 x 10 to minus 5
400
0.050M acetic acid (Ka=1.8 x 10 to minus 5) and 0.10M sodium acetate determining the pH.
What is a pH of 5.05
500
a solution that contains one gram equivalent weight of the solute in 1 liter of total solution
What is a Normal solution
500
The measure of the adequacy and quality of the separation in chromatography
What is resolution
500
Determine the solubility after the addition of a common ion where: Hg2Cl2(s) --- Hg2++(aq) + 2Cl-(aq) with initial concentration of 0.05M; 0.03M NaCl is added
What is the new Ksp of 8.45 x 10 to minus 4
500
A 0.050M solution of acetic acid with Ka = [CH3COO-][H+] [CH3COOH] Where Ka = 1.8 x 10 to minus 5
What is a pH of 3.02
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