chem sf 6 - Chapter 14 Chemical Equalibrium Reversible...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 14 Chemical Equalibrium
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Reversible Reactions In the above reaction H 2 and I 2 react to form 2 HI molecules. However, the 2 HI molecules can also react to reform the H 2 and I 2. A reaction that can proceed in both the forward and reverse direction is called Reversible. When the forward reaction has a rate equal to the rate of the reverse reaction the H 2 (g) + I 2 (g) 2 HI (g)
Background image of page 2
H 2 ( g ) + I 2 ( g ) 2 HI( g ) at time 0, there are only reactants in the mixture, so only the forward reaction can take place [H 2 ] = 8, [I 2 ] = 8, [HI] = 0 at time 16, there are both reactants and products in the mixture, so both the forward reaction and reverse reaction can take place [H 2 ] = 6, [I 2 ] = 6, [HI] = 4
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
H 2 ( g ) + I 2 ( g ) 2 HI( g ) at time 32, there are now more products than reactants in the mixture the forward reaction has slowed down as the reactants run out, and the reverse reaction accelerated [H 2 ] = 4, [I 2 ] = 4, [HI] = 8 at time 48, the amounts of products and reactants in the mixture haven’t changed – the forward and reverse reactions are proceeding at the same rate – it has reached equilibrium
Background image of page 4
Equilibrium Equal the rates of the forward and reverse reactions are equal at equilibrium but that does not mean the concentrations of reactants and products are equal some reactions reach equilibrium only after almost all the reactant molecules are consumed – we say the position of equilibrium favors the products other reactions reach equilibrium when only a small percentage of the reactant molecules are consumed – we say the position of equilibrium favors the reactants
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Equilibrium Constant even though the concentrations of reactants and
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/26/2011 for the course CHEMISTRY 2401 taught by Professor Staff during the Spring '11 term at Georgia State University, Atlanta.

Page1 / 18

chem sf 6 - Chapter 14 Chemical Equalibrium Reversible...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online