3.1.10 Chemical Equilibria Flashcards
1
Q
What does dynamic mean in the context of a dynamic equilibrium?
A
Both the forward and the reverse reactions occur simultaneously
2
Q
State and explain the effect of increasing the pressure on the time taken to reach equilibrium
A
More molecules in given volume/molecules are closer together
More frequent successful collisions
3
Q
Data book value is different to the one that you have calculated using mean bond enthalpies. Why?
A
mean bond enthalpy for (reactant) is different to actual bond enthalpy
4
Q
Why does a catalyst become less efficient if the reactants contain impurities?
A
Impurities block the active sites
OR catalyst poisoned
5
Q
Why do you not want a high pressure and low temperature?
A
Rate is slow
High pressure is expensive (due to energy or plant costs)
