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If the temperature of the system at equi...

If the temperature of the system at equilibrium is increased, the equilibrium will shift in the direction which ………… heat.

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If a system at equilibrium is subjected to a change of any one of the factors such as concentration , pressure or temperature, the system adjusts itself in such a way so as to minimise the effect of that change. Effect of change in concentration on equilibrium: As we add or remove reactant (or product) the ratio of equilibrium concentratio become 'Q' (reaction quotient) and depending upon. QltK : equilibrium will shift ihn forward direction QgtK equilibrium will shift in backward direction Effect of change in pressure : If a system in equilibrium consists of gases, then the concentrations of all the components can be altered by changing the pressure. When the pressure on the system is increased, then equilibrium will shift in the direction in which there is decrease in number of moles i.e., towards the direction in which there is decrease in volume. Effect of change in pressure on melting point : There are two rypes of solids : Solids whose volume decreases on melting, e.g., ice, diamond, carborundum, magnesium nitride and quartz. Solid (higher volume) hArr Liquid (higher volume) The process of melting is facillitated at high pressure, thus melting point is lowered. Solid whose volume increase on melting, e.g., Fe, Cu, Ag, Au, etc. Solid (lower volume) hArr Liquid (higher volume) In this case the process of melring becomes difficult at high pressure, thuse melting point becomes high. Solubility of substances : When solid substance are dissolved in water, either heat is evolved. for endothermic solubility process solubility increase with increase in temperature. For exothemic solubility decrease with increase in temperature. Solubility of gases in liquids : when a gas dissolves in liquid, there is decreases in voolume. Thus increase of pressure will faavour the dissolution of gas in liquid. Effect of temperature : For endotherimic reacrtion as temperature increases reaction shift in backward direction A'X'(g) solute when dissolved in water heat is evolved. Then solubility of' X' will increase :

If a system at equilibrium is subjected to a change of any one of the factors such as concentration , pressure or temperature, the system adjusts itself in such a way so as to minimise the effect of that change. Effect of change in concentration on equilibrium: As we add or remove reactant (or product) the ratio of equilibrium concentratio become 'Q' (reaction quotient) and depending upon. QltK : equilibrium will shift ihn forward direction QgtK equilibrium will shift in backward direction Effect of change in pressure : If a system in equilibrium consists of gases, then the concentrations of all the components can be altered by changing the pressure. When the pressure on the system is increased, then equilibrium will shift in the direction in which there is decrease in number of moles i.e., towards the direction in which there is decrease in volume. Effect of change in pressure on melting point : There are two rypes of solids : Solids whose volume decreases on melting, e.g., ice, diamond, carborundum, magnesium nitride and quartz. Solid (higher volume) hArr Liquid (higher volume) The process of melting is facillitated at high pressure, thus melting point is lowered. Solid whose volume increase on melting, e.g., Fe, Cu, Ag, Au, etc. Solid (lower volume) hArr Liquid (higher volume) In this case the process of melring becomes difficult at high pressure, thuse melting point becomes high. Solubility of substances : When solid substance are dissolved in water, either heat is evolved. for endothermic solubility process solubility increase with increase in temperature. For exothemic solubility decrease with increase in temperature. Solubility of gases in liquids : when a gas dissolves in liquid, there is decreases in voolume. Thus increase of pressure will faavour the dissolution of gas in liquid. Effect of temperature : For endotherimic reacrtion as temperature increases reaction shift in backward direction Fe(l)hArrFe(s) Above equilibrium is favaured at :

System is in equilibrium

Reasing the temperature of an equilibrium system

Explain the effect of temperature on a system at equilibrium

If a system at equilibrium is subjected to a change of any one of the factors such as concentration , pressure or temperature, the system adjusts itself in such a way so as to minimise the effect of that change. Effect of change in concentration on equilibrium: As we add or remove reactant (or product) the ratio of equilibrium concentratio become 'Q' (reaction quotient) and depending upon. QltK : equilibrium will shift ihn forward direction QgtK equilibrium will shift in backward direction Effect of change in pressure : If a system in equilibrium consists of gases, then the concentrations of all the components can be altered by changing the pressure. When the pressure on the system is increased, then equilibrium will shift in the direction in which there is decrease in number of moles i.e., towards the direction in which there is decrease in volume. Effect of change in pressure on melting point : There are two rypes of solids : Solids whose volume decreases on melting, e.g., ice, diamond, carborundum, magnesium nitride and quartz. Solid (higher volume) hArr Liquid (higher volume) The process of melting is facillitated at high pressure, thus melting point is lowered. Solid whose volume increase on melting, e.g., Fe, Cu, Ag, Au, etc. Solid (lower volume) hArr Liquid (higher volume) In this case the process of melring becomes difficult at high pressure, thuse melting point becomes high. Solubility of substances : When solid substance are dissolved in water, either heat is evolved. for endothermic solubility process solubility increase with increase in temperature. For exothemic solubility decrease with increase in temperature. Solubility of gases in liquids : when a gas dissolves in liquid, there is decreases in voolume. Thus increase of pressure will faavour the dissolution of gas in liquid. Effect of temperature : For endotherimic reacrtion as temperature increases reaction shift in backward direction For the reaction N_(2)(g)+O_(2)(g)hArr2NO(g) If pressure id increased by reducing the volume of the container then :

The stage of the system is the dynamic equilibrium in which

CENGAGE CHEMISTRY-CHEMICAL EQUILIBRIUM-Exercises (Fill In The Blanks)
  1. If the activation energies of the forward and backward reactions of a ...

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  2. If the value of equilibrium constant is large, ……….. Are more stable.

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  3. The magnitude of equilibrium constant is a measure of ………. to which th...

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  4. Le Chatelier's principle is applicable to both …………. and …………. equilib...

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  5. Low temperature is favourable for ……….. reactions.

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  6. Low pressure is favourable for those reversible reactions in which the...

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  7. If the temperature of the system at equilibrium is increased, the equi...

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  8. An endothermic reaction which proceeds with decrease in volume will gi...

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  9. The formation of ammonia by Haber's process is favoured by ………. pressu...

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  10. Low pressure favoures those reactions which occur with ……….. in the nu...

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  11. For a system of gases A, B, C, and D at equilibrium A+2B hArr C+3D, th...

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  12. For the reaction A+B hArr C+D, the initial concentrations of A and B a...

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  13. For reaction PCl(3)(g)+Cl(2)(g) hArr PCl(5)(g), K(c) is 30 at 300 K. T...

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  14. For CaCO(3)(s) hArr CaO(s)+CO(2)(g), K(c) is equal to …………..

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  15. The vapour density of Pcl(5) is 104.16 but when heated to 230^(@)C, it...

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  16. In line kilns, the following reaction, CaCO(3)(s) hArr CaO(s)+CO(2)(...

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  17. The degree of dissociation of PCl(5) will be more at ………. pressure.

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  18. When the system 2HI(g) hArr H(2)(g)+I(2)(g) is at equilibrium, inert g...

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  19. When a product is removed from the system which is at equilibrium ………....

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  20. The melting of ice is favoured by ………….. pressure and ………….. temperatu...

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