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REACTION QUOTIENT

REACTION QUOTIENT

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REACTION QUOTIENT

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  1. Q REACTION QUOTIENT

  2. Q is the reaction quotient • Gives the condition of the reaction at any point during the reaction. • [X]o indicates the initial concentration of a species

  3. Q is the reaction quotient • is expressed the same as K • [Products]coeff • [Reactants]coeff • At equilibrium K = Q

  4. Think of the reaction like sand in an hourglass. K Reactants Reactants K K Reactants It can be tipped to run one way or the other. Q Q Q Products Products Products

  5. K Reactants Q Products At EQUILIBRIUM the forward reaction will equal the reverse reaction

  6. K Reactants Q Products At EQUILIBRIUM K = Q

  7. K Reactants Q Products So if K is larger than Q which way do we need to “tip” the reaction to make them equal?

  8. Reactants K K Products Q Q So if K is larger than Q which way do we need to “tip” the reaction to make them equal? Tip towards Q, PRODUCTS. The reaction favors products.

  9. Reactants Reactants K Products Products K Q Q What if K is smaller than Q which way do we need to “tip” the reaction to make them equal? Tip towards K. The reaction favors reactants.

  10. Reactants K Products Q When Equilibrium is reached K = Q Forward and reverse are equal.