the following equilibria are d sure, does the concentratio wnstcrco()0(8) uilibr
ID: 1030331 • Letter: T
Question
the following equilibria are d sure, does the concentratio wnstcrco()0(8) uilibrium increase, decrease, or rema the ame?h eacti SiCI) (c) Si(s) + 2Ch(g) ) the following equilibria, use Le C the e of the equilibrium m the direction of the reaction by decreasing the volume of thehe (a) C(s) + H,O(8) 762 Fo reasing the volume of the equl Pres .69 2H2O(8) 2H3HCO) Fe (5)(g).tnol (.-41 kJ/mol ). Does. (b) 2 H2(g) + 02(8) 120,( H98 kcal/mol (-41 k/mol amount of Hy in an equilibrium amoun rease when the temperature is deç The reaction 3 20,(g) has A +68 kcal/mol (+285 kJ/mol). Does the constant for the reaction inceub temperature increases? decrease when the temperature isture in nd54 The reJ/mol). Does the equi 2.70 re or decrease w g) 265 The reaction H2(g) 12( re --22 kcal/rmol (-92 kJ/mol )11(R) has on of HI increase or decrease se mol). Will rium concentration of HI increase or d (a) 12 is added? (b) H2 is removed? (c) A catalyst is added? (d) The temperature is increased?Explanation / Answer
61. According to Le-chatlier's principle increase in pressure will shift the equilibrium towards less number of gaseous moles.
(a) No.of gaseous reactants = 2
No.of gaseous products = 3
So, increase in pressure shifts equilibrium towards left side. Hence concentration products will decrease.
(b)
No.of gaseous reactants = 2
No.of gaseous products = 2
So, increase in pressure does not alter the equilibrium position.
(c)
No.of gaseous reactants = 2
No.of gaseous products = 1
So, increase in pressure shifts equilibrium towards right side. Hence concentration products will increase.
62.
(a)
No.of gaseous reactants = 1
No.of gaseous products = 2
So, increase in pressure shifts equilibrium towards left side. Hence concentration products will decrease.
(b)
No.of gaseous reactants = 3
No.of gaseous products = 2
So, increase in pressure shifts equilibrium towards right side. Hence concentration products will increase.
(c)
No.of gaseous reactants = 3
No.of gaseous products = 3
So, increase in pressure does not alter the equilibrium position.
63.
According to Lechatlier's principle increase in tempetature favours endothermic reaction.
Since in the given equilibrium forward reaction is exothermic, increase in temperature favours back ward reaction.
Hence, Increase in temperature will decrease the amount of H2.
64.
According to Lechatlier's principle increase in tempetature favours endothermic reaction.
Since in the given equilibrium forward reaction is endothermic, increase in temperature favours forward reaction.
Hence, Increase in temperature will increase equilibrium constant.
65.
(a) Increases on addition of I2
(b) Decreases on removal of H2
(c) Does not alter
(d) Decreases on increasing temperature.
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