Chemistry 2 Flashcards
What is atom economy
Tells you how much mass of reactants is wasted
How do you workout atom economy
Relative formula mass of the desired product. Divided by the relative formula mass of reactants times by 100
What happens when you go down the periodic table
Boiling points increase so it increases intermolecular forces
How do you workout the percentage yield
Mass of product actually made divided by maximum theoretical mass of product times by 100
Low melting point
Weak intermolecular forces of attraction
Does not conduct electricity when molten
There are no charged particles free to move
High boiling point
Bonds are strong
Conduct electricity when molten
Ions are free to move
Hydrogen fuel cell equation
Hydrogen + oxygen = water
Hydrogen fuel cell half equations
H2 goes to 2H+ + 2e-
O2 + 4H+ + 4e- goes to 2H2O
The greater the distance of reactivity of metals
the greater the potential difference produced by cell
What batteries are unchargeable
Alkaline
Human activities greenhouse gases
Carbon dioxide and methane
By creating waste and agriculture
Effects of climate change
Sea levels will rise slow food production increase of storms ice caps to melt
How can you reduce carbon footprints
Renewable energy sources tax companies conserve energy and cut waste
