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Easter Chemistry
recap
Question | Answer |
---|---|
Initial rate of reaction | change in concentration of a reactant/product per unit at the start of a reaction |
rate determining step | slowest step in a multi step reaction |
Kc is greater than 1 | product favoured |
Kc is less than 1 | reactant favoured |
If the forward reaction is endothermic what happens to the Kc value | Kc increases equilibrium shifts to the right |
If the forward reaction is exothermic what happens to the Kc value | Kc decreases equilibrium shifts to the left |
Lewis Acid | species that is an electron acceptor |
Lewis Base | species that is an electron donor |
Buffer Solution | mixture that minimizes pH changes when small amounts of acid or base are added. |
Equivalence point | point of a titration where the volume one solution has reacted exactly with the volume of a second soltuion. |
End point | point in the titration at which there are equal concentrations of the weak acid the conjugate base pair |
Why cant lattic enthalpy be determined directly | impossible to form one mole of solid compound from its gaseous ions. |
Catalyst | provides an alternative pathway with a lower activation energy for the reaction |
High Kstab value | more stable the complex more easily the complex forms |