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Mechanism of a hypothetical reaction X2 + Y2 → 2 × Y is given below: (b) X + Y2 → XY + Y (slow) (c) X + Y → XY (fast) The overall order of reaction is (a) 2 (b) 0 (c) 1.5 (d) 1" |
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Answer» tion:CHEMISTRYMechanism of a HYPOTHETICAL reaction X 2 +Y 2 →2XY is given below:(i) X 2 ⇌X+X(FAST)(ii) X+Y 2 →XY+Y(SLOW)(iii) X+Y→XY(fast)The overall order of the reaction will be:October 15, 2019avatarPremlata SrinivasSHAREVIDEO EXPLANATIONANSWERTake reaction (i) and (iii) to be equilibrium reaction where value of k f >>>k b Therefore, [X 2 ][X] 2 =K E′ ∴[X]=K e′ 0.5 ×[X 2 ] 0.5 −(A)Since reaction (ii) is the slowest step, so the rate of this reaction will be reaction rate for the main reaction.∴r=K e [X][Y 2 ] −(B)Substituting EQUATION (A) in equation (B)We get r=K e ×K e′ 0.5 [X 2 ] 0.5 [Y 2 ]Let K e ×K e′ =K∴r=K[X 2 ] 0.5 [Y 2 ]Hence, order of reaction is 1+0.5=1. v. please mark it brainliest |
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