Chapter 14 - Introduction NO2 is a reddish brown gas and...

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As time progresses As time progresses Introduction NO 2 is a reddish brown gas and N 2 O 4 is a colorless gas. 2NO 2 N 2 O 4
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Chemical equilibrium The reaction has not stopped. At molecular level reaction is still going on. Rate of forward reaction = rate of reverse reaction. NO 2 N 2 O 4
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aA + bB ………. gG +hH…. . a, b, ….g, h… are all stoichiometric constants. A, B…. G, H ….are all reacting species and products. K c = [G] g [H] h …… (Applying law of mass action) [A] a [B] b …… The above ratio is known as equilibrium constant expression. Note: The concentrations in the above expression are all equilibrium concentrations. A set of equilibrium concentrations is called as equilibrium position. For a chemical reaction involving gases, K p = P G g . P H h ….. P A a . P B b …… K P = K C (RT) Δn gas Δn gas = (g + h + ….) – (a + b + ….)
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1. Equilibrium concentrations of all species in a reaction depend on initial concentrations. 2. No species is completely consumed.
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Chapter 14 - Introduction NO2 is a reddish brown gas and...

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