rates and equilibrium

• what is a dynamic equilibrium?

  where the rate of a forward reaction is equal to the rate of the reverse reaction
• what is le chateliers principle?

  The principle that states that when a system in equilibrium is subjected to a change, it will adjust to counteract that change and maintain equilibrium.
• what type of system is needed for a dynamic equilibrium?

  closed system
• what does a catalyst do?

  it lowers activation energy and creates alternative pathways
• what does boltzmanns distribution show?

  Distribution of energy among particles.
• how does temperature affect boltzmanns distribution ?

  shifts it to the right as more particles have more energy
• what does increasing temperature do to collisions?

  increases successful collisions
• what catalyst is used in the haber process?

  Iron
• what is heterogenous catalyst?

  a catalyst which is in a different phase to the reactants such as physical states
• what is a homogeneous catalyst?

  A catalyst that is in the same phase as the reactants.
• n2+3h2=2nh3

  what would increasing pressure cause?

  shift equilibrium to the right as there is less moles on the products side
• n2+3h2=2nh3 (exothermic)

  what would an increase in temperature cause?

  the equilibrium will shift to the left as the forward reaction is exothermic
• n2+3h2=2nh3

  what would have if n2 concentration was increased?

  the equilibrium will shift to the right to produce more product
• what effect does a catalyst have on position of equilibrium?


  it has no effect on the position
• equation for equilibrium constant?

  [a]^n[b]^n/[c]^n[d]^n
• what does it mean if the equilibrium constant is a big number?

  The reaction strongly favors products.