Which of the following conditions characterizes a system in a ...

[big1devin]

Which of the following conditions characterizes a system in a state of chemical equilibrium?
 
  A) Concentrations of reactants and products are equal.
  B) Rate of forward reaction has dropped to zero.
  C) Reactants are being consumed at the same rate they are being produced.
  D) Reactant molecules no longer react with each other.
  E) Product concentrations are greater than reactant concentrations.

Question 2

Sketch a diagram to illustrate the role of orientation in determining whether a collision between molecules of two different diatomic elements will lead to formation of a compound.
 
  How could you illustrate the influence of energy considerations on this reaction?

[sultana.d]

Answer to Question 1

C

Answer to Question 2

The diagram should show the two diatomic molecules touching each other so that the two pairs of different atoms are in contact. The drawing may also include lines showing that the bonds in the molecules of the elements are broken and new bonds form between the two different elements:

X---X X X
 
O---O O O

To illustrate the importance of energy, a heavy line could be used to indicate how hard the impact between X2 and O2 is, using a darker or wider line for a stronger impact. Part of activation energy involves an impact with sufficient energy.

[big1devin]

Wow, this really help

[xiazhe]

Excellent