At 20⁰C NO₂ ; N₂O₄ gases exist in equilibrium as shown in the equation below.

At 20⁰C NO₂ ; N₂O₄ gases exist in equilibrium as shown in the equation below.


(a) What is the significance of the negative sign as in the equation above.
(b) State and explain the observations that would be made when
(i) A syringe containing the mixture was immersed in warm water.
(ii) The volume of the gaseous mixture in the syringe was increased.

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(a) The negative sign indicates / shows that the reaction is exothermic / evolves heat

(b) (i) Brown colour intensifies / persists
(ii) Shift the equilibrium to the left because brown colour intensifies
Increasing volume decreases pressure and hence favours backward reaction.

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maurice.mutuku answered the question on September 17, 2019 at 07:19

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