Question
Asked Sep 30, 2019
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In a hydrocarbon solution, the gold compound
(CH3)3 AuPH3 decomposes into ethane (C2 H6)
and a different gold compound, (CH3)AUPH3
The following mechanism has been proposed for
the decomposition of (CH3)3 AuPH3
Step 1:
(CH3)3AuPH3 (CH3)3Au + PH3 (fast)
Step 2:
(CH3)3 Au- C2 He (CH3)Au (slow)
Step 3:
(CH3)Au PH3(CH3)AuPH3(fast)
TL
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In a hydrocarbon solution, the gold compound (CH3)3 AuPH3 decomposes into ethane (C2 H6) and a different gold compound, (CH3)AUPH3 The following mechanism has been proposed for the decomposition of (CH3)3 AuPH3 Step 1: (CH3)3AuPH3 (CH3)3Au + PH3 (fast) Step 2: (CH3)3 Au- C2 He (CH3)Au (slow) Step 3: (CH3)Au PH3(CH3)AuPH3(fast) TL

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What is the rate law predicted by this mechanism?
[(CH3)3 AUPH3],bfor [(CH3)3 Au]
PH3, d for [C2 H], e for [(CH3)Au] and k for the
Use a for
c for
rate constant.
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What is the rate law predicted by this mechanism? [(CH3)3 AUPH3],bfor [(CH3)3 Au] PH3, d for [C2 H], e for [(CH3)Au] and k for the Use a for c for rate constant.

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Expert Answer

Step 1
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dOmposi tian CH),Au PH Posed for the step: (CH)AuPH CH)A t PH (fast) step: 2 CH)Au - Ht leu3)Au (slo) he mechanicw has been Ht LCHAU (slo) CHAUPH3 Fact) step: CH)Aut PH

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Step 2
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The ovexall readtion is, CH3Au PH, He + CH)Au PH2

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Step 3
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The second step is slon The rate Ları is Pseutad ac) xater K[CeH)A K[b 1

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