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13 Cards in this Set
- Front
- Back
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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 |
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Define lattice enthalpy |
- The enthalpy change that accompanies the formation of one mole of an ionic compound - From its gaseous ions under standard conditions |
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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 |
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typical property of transition elements |
Catalyst or coloured |
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Two common types of reaction of complex ions |
- Precipitate reactions - Ligand substitution |
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If not sure what equation to use for Ka which one should you use |
- [H+][A-]/[HA] - Often says do not allow [H+]^2 |
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Dissociation of carbonic acid |
- H2CO3 HCO3− + H+ |
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methods to store hydrogen |
- Adsorbed on a solid - as a liquid under high pressure |
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ionic equation for acid and carbonate |
2H+ + CO32- → H2O + CO2 |
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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 |
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How something is first order through a rate conc graph |
- Straight line through origin |
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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 |
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Define the term ligand |
donates an electron pair to a metal ion or forms a coordinate bond to a metal ion |
