Consider the following isotope-exchange reaction: DCl (g) + HBr (g) DBr (g) + HCl (g) The amount

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Consider the following isotope-exchange reaction:

DCl (g) + HBr (g) ‡„ DBr (g) + HCl (g)

The amount of each species at equilibrium can be measured using proton and deuterium NMR (see Journal of Chemical Education 73 [1996]: 99). Using the spectroscopic information below, determine KP for this reaction at 298 K. For this reaction, Δε = 41 cmˆ’1, equal to the difference in zero-point energies between products versus reactants, and the ground-state electronic degeneracy is zero for all species.

M (g mol-l) в (сm-1) V (cm-1) н$C1 10.59 35.98 2991 D3°C1 36.98 5.447 2145 H$'Br 81.92 8.465 2649 D°'Br 82.93 1885

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Physical Chemistry

ISBN: 978-0321812001

3rd edition

Authors: Thomas Engel, Philip Reid

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