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4 Written questions

3 Multiple choice questions

  1. an equilibrium system in which all reactants and products are in the same state
  2. an equilibrium involving reactants and/or products in more than one state
  3. if a system at equilibrium is subjected to a small change the equilibrium tends to shift so as to minimize the effect of the change

3 True/False questions

  1. catalyst(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected


  2. reaction quotient(Q) the value that is obtained when concentrations of reactants and products are inserted into the equilibrium expression. If the concentrations are equilibrium concentrations, Q=K, otherwise Q can't equal K.


  3. law of mass action(chemistry) the law that states the following principle: the rate of a chemical reaction is directly proportional to the molecular concentrations of the reacting substances