The rate of chemisorption is proportional to \( e^{-E_a / RT} \). Therefore, the ratio of rates is:
\[ \frac{r_{Pt}}{r_{Ni}} = \frac{e^{-E_a^{Pt} / RT}}{e^{-E_a^{Ni} / RT}} = e^{\frac{E_a^{Ni} - E_a^{Pt}}{RT}} \]
The logarithm of the ratio of chemisorption rates is approximately 2.
List I (Spectral Lines of Hydrogen for transitions from) | List II (Wavelength (nm)) | ||
A. | n2 = 3 to n1 = 2 | I. | 410.2 |
B. | n2 = 4 to n1 = 2 | II. | 434.1 |
C. | n2 = 5 to n1 = 2 | III. | 656.3 |
D. | n2 = 6 to n1 = 2 | IV. | 486.1 |
The angular momentum of an electron in a stationary state of \(Li^{2+}\) (\(Z=3\)) is \( \frac{3h}{\pi} \). The radius and energy of that stationary state are respectively.