Chemistry

Chemistry

Problem

The overall reaction X+2 Y→Z\text{X}+2\,\text{Y}\rightarrow \text{Z} is believed to occur by the following mechanism. Step 1 X ++ Y ⇌\rightleftharpoons XY (fast equilibrium) Step 2 XY ++ Y ⟶\longrightarrow Z (slow) Which rate law is most consistent with this mechanism? a) rate =k[X]2[Y]=k[\text{X}]^{2}[\text{Y}] b) rate =k[X][Y]2=k[\text{X}][\text{Y}]^{2} c) rate =k[Y]2=k[\text{Y}]^{2} d) rate =k[X][Y]=k[\text{X}][\text{Y}]

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