Flashcards
If Kc is larger than 104 is there significantly more reactant or product?
Product
What is the common oxidation number of group 1 metals?
+1
True or false. Both hydrogen fuel cells in acidic or basic conditions convert H2 and O2 into water.
True
pH + pOH = ?
14 or Kw (at just below 25°C)
What is the difference between primary, secondary and tertiary alcohol?
The number of carbon atoms attached to the carbon that the hydroxyl is attached to
What is produced when a secondary alcohol is oxidised?
A ketone
What is Kw?
Kw is the ionic product constant of water. It is the equilibrium constant for the self-ionisation of water. Kw can be used to calculate the concentration of hydrogen ions from the concentration of hydrogen ions from the concentration of hydroxide ions in a solution
Under what circumstances could the numerical value of Kw differ?
Different temperatures. Kw is 10-14 at just below 25°C
A substance with a low melting point and high solubility in cyclohexane is most likely to be an ____
alkane / hydrocarbon
Name the monomer of polyethylene
Ethene
The monomer of polylactic acid is?
Lactic acid
Is a base strong or weak if its pKb is large?
Weak
In a reaction where a gas is produced what type of system is required for equilibrium to be reached?
A closed system
What is the definition of a strong acid in terms of its Ka?
Ka > 1 is a strong acid
What is the analyte?
The solution in a titration whose concentration is unknown
What is parallax error?
When the volume of a liquid is read when the eye level is above or below the meniscus. It leads to inaccurate volumes being determined
What is a titration?
A technique used to determine the unknown concentration of a solution
True or false. The strength with which proteins bind to the solid support in a cationic exchange column is determined by the relative degree of negative surface charge on each different protein
True
True or false. A fuel cell is a type of galvanic cell
True
The _____ structure considers the 3D arrangement of a protein
Tertiary
Name the two types of electrochemical cells
Galvanic and electrolytic
Name the amino acid without a chiral centre
Glycine
The key information gained from IR spectroscopy is?
Functional groups present
In relation to water solubility, what is the name given to the carbon chain of a soap molecule?
Hydrophobic
Markovnikov’s rule applied to addition reactions with Hydrogen halides says that…
the hydrogen atom will be added to the carbon with the greatest number of hydrogen atoms
In the Haber process in which direction does the equilibrium shift if the pressure is increased
Right
In an electrolytic cell, what charge does the anode have
Positive
What is the dissociation expression for an acid?
Ka = [H+][A-]/[HA]
What is the conjugate base of ammonium (NH4+)
NH3
What is the amino acid charge if the pH
Negative
What is meant by the term “reversible reaction”
Reaction in which the conversion of reactions to products and products to reactants occur simultaneously
What are Eo values
The symbol represents the cell potential. It shows the voltage produced in a Galvanic half-cell
True or false. strongly polar bonds produce weak bands in an IR spectrum
False
Triglycerides consist of how many fatty acids
3
Standard electrode potentials are generally written as
Reduction half equation
Name the two main processes used for synthesising ethanol
Fermentation, hydration of ethene
Name the classes of organic compounds that have functional groups with oxygen in them
Alcohols, aldehydes, ketones, carboxylic acids and esters
On an equilibrium graph, how do you know the reaction has reached equilibrium
When equilibrium is established the concentration lines are horizontal
The _____ structure of a protein is the sequence of amino acids
Primary
True or false. A substance to be separated by TLC that is strongly attracted to the stationary phase will travel more slowly than a substance that is not strongly attracted
True
