Unit 2 Flashcards
What is a 10 carbon hydrocarbon called
Nonane
Why does cracking produce a lot of products
Any carbon - carbon bond can break
Why are cyclic hydrocarbons more useful to petrol company’s
Promote efficient combustion
What is the equation for fermentation?
C6H12O6 —- 2 C2H5OH + 2 CO2
What conditions are needed for fermentation
Absence of oxygen
Use of yeast
How is the concentration of the stratosphere maintained?
Rate of decomposition = rate of formation
Give an every day use for IR
Breathalysers
Give equations for formation and depletion in stratosphere
O3 — O2 + O
O + O2 — O3
Why C-I more reactive than C-Br
Bond is weaker, easier to break h
What is a replacement for CFCs
HCFCs
What does 100% atom economy mean?
All reactants made into desired product
Equation for hydration of ethene
C2H4 + H2O — C2H5OH
Are the stages to manafacture ethene
Fractional distillation
Cracking
What is the average bond enthalpy
When one mole of bonds is broken
What is le chateliers principle
Equilibrium shifts to minimise any change
Benefit of ozone layer to life
Absorbs UV radiation
UV at earths surface reduced
What is the formula for an ally ?
Cn H2n-1 Br
What are some sources of nitrogen oxides?
Thunderstorms
Aircraft
What is the greenhouse effect dependent on?
Residence time
Ability to absorb IR
Abundance in atmosphere
How does a catalytic converter work?
Reactants are absorbed
Bonds in reactants are weakened
Products desorb
