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13 Cards in this Set

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  • Back

when working out rate equation and rate constant

- When [x] x2 rate x2 so first order with respect to x. (for every reactant)

- Show arranged rate equation with symbols

- Then arranged for k with symbols.

- units in order - dm mol s

Define lattice enthalpy

- The enthalpy change that accompanies the formation of one mole of an ionic compound

- From its gaseous ions under standard conditions

When describing ionic bonds strengths

- Talk about size of ions, charge and then charge density.

- Talk about the strength of attraction of the specific ions in the lattice

typical property of transition elements

Catalyst or coloured

Two common types of reaction of complex ions

- Precipitate reactions

- Ligand substitution

If not sure what equation to use for Ka which one should you use

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

- Often says do not allow [H+]^2

Dissociation of carbonic acid

- H2CO3 HCO3− + H+

methods to store hydrogen

- Adsorbed on a solid

- as a liquid under high pressure

ionic equation for acid and carbonate

2H+ + CO32- → H2O + CO2

state tow advantages of using methanoic acid as the fuel in a fuel cell rather than hydrogen

- Methanoic acid is a liquid and easier to transport

- Hydrogen is explosive

- HCOOH has more public acceptance than hydrogen as a fuel

How something is first order through a rate conc graph

- Straight line through origin

once important difference between a fuel cell and an conventional electrochemical cell

- A fuel cell converts energy from reaction of a fuel with oxygen into a voltage/electrical energy

Define the term ligand

donates an electron pair to a metal ion or forms a coordinate bond to a metal ion