Horvath Practice Problems 38

Horvath Practice - Q = C c D d A a B b(9.3 The reaction quotient applies to the current situation of the reaction and thus changes over the course

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
9 THE REACTION QUOTIENT AND LECHATELIER’S PRINCIPLE We have seen that the equilibrium constant is an important quantity. It turns out that one can extend the de f nition of the equilib- rium constant to non-equilibrium situations. The Reaction Quotient Under non-equilibrium situations the ratio of the concentra- tion (or partial pressures) of products to reactants is called the reaction quotient, Q = [ products ] [ reactants ] . (9.1) So, for the reaction, aA + bB ­ cC + dD, (9.2) the reaction quotient is
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Q = [ C ] c [ D ] d [ A ] a [ B ] b . (9.3) The reaction quotient applies to the current situation of the reaction and thus changes over the course of the reaction. Clearly, at equilibrium Q = K. Beyond that, however, if Q < K the reaction will proceed in the forward direction (make more products). And, if Q > K the reaction will proceed in the reverse direction (make more reactants). THE REACTION QUOTIENT AND LECHATELIER’S PRINCIPLE 37...
View Full Document

This document was uploaded on 11/01/2011 for the course CHM 2046 at University of Florida.

Ask a homework question - tutors are online