Flashcards

Question 1

If Kc is larger than 104 is there significantly more reactant or product?

Answer 1

Product

Question 2

What is the common oxidation number of group 1 metals?

Answer 2

+1

Question 3

True or false. Both hydrogen fuel cells in acidic or basic conditions convert H2 and O2 into water.

Answer 3

True

Question 4

pH + pOH = ?

Answer 4

14 or Kw (at just below 25°C)

Question 5

What is the difference between primary, secondary and tertiary alcohol?

Answer 5

The number of carbon atoms attached to the carbon that the hydroxyl is attached to

Question 6

What is produced when a secondary alcohol is oxidised?

Answer 6

A ketone

Question 7

What is Kw?

Answer 7

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

Question 8

Under what circumstances could the numerical value of Kw differ?

Answer 8

Different temperatures. Kw is 10-14 at just below 25°C

Question 9

A substance with a low melting point and high solubility in cyclohexane is most likely to be an ____

Answer 9

alkane / hydrocarbon

Question 10

Name the monomer of polyethylene

Answer 10

Ethene

Question 11

The monomer of polylactic acid is?

Answer 11

Lactic acid

Question 12

Is a base strong or weak if its pKb is large?

Answer 12

Weak

Question 13

In a reaction where a gas is produced what type of system is required for equilibrium to be reached?

Answer 13

A closed system

Question 14

What is the definition of a strong acid in terms of its Ka?

Answer 14

Ka > 1 is a strong acid

Question 15

What is the analyte?

Answer 15

The solution in a titration whose concentration is unknown

Question 16

What is parallax error?

Answer 16

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

Question 17

What is a titration?

Answer 17

A technique used to determine the unknown concentration of a solution

Question 18

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

Answer 18

True

Question 19

True or false. A fuel cell is a type of galvanic cell

Answer 19

True

Question 20

The _____ structure considers the 3D arrangement of a protein

Answer 20

Tertiary

Question 21

Name the two types of electrochemical cells

Answer 21

Galvanic and electrolytic

Question 22

Name the amino acid without a chiral centre

Answer 22

Glycine

Question 23

The key information gained from IR spectroscopy is?

Answer 23

Functional groups present

Question 24

In relation to water solubility, what is the name given to the carbon chain of a soap molecule?

Answer 24

Hydrophobic

Question 25

Markovnikov's rule applied to addition reactions with Hydrogen halides says that...

Answer 25

the hydrogen atom will be added to the carbon with the greatest number of hydrogen atoms

Question 26

In the Haber process in which direction does the equilibrium shift if the pressure is increased

Answer 26

Right

Question 27

In an electrolytic cell, what charge does the anode have

Answer 27

Positive

Question 28

What is the dissociation expression for an acid?

Answer 28

Ka = [H+][A-]/[HA]

Question 29

What is the conjugate base of ammonium (NH4+)

Answer 29

NH3

Question 30

What is the amino acid charge if the pH

Answer 30

Negative

Question 31

What is meant by the term "reversible reaction"

Answer 31

Reaction in which the conversion of reactions to products and products to reactants occur simultaneously

Question 32

What are Eo values

Answer 32

The symbol represents the cell potential. It shows the voltage produced in a Galvanic half-cell

Question 33

True or false. strongly polar bonds produce weak bands in an IR spectrum

Answer 33

False

Question 34

Triglycerides consist of how many fatty acids

Answer 34

3

Question 35

Standard electrode potentials are generally written as

Answer 35

Reduction half equation

Question 36

Name the two main processes used for synthesising ethanol

Answer 36

Fermentation, hydration of ethene

Question 37

Name the classes of organic compounds that have functional groups with oxygen in them

Answer 37

Alcohols, aldehydes, ketones, carboxylic acids and esters

Question 38

On an equilibrium graph, how do you know the reaction has reached equilibrium

Answer 38

When equilibrium is established the concentration lines are horizontal

Question 39

The _____ structure of a protein is the sequence of amino acids

Answer 39

Primary

Question 40

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

Answer 40

True