CHEM 104 Chapter 15.1: chem 104 pre class 3.5

Show that and are consistent with as Cy and as oU Step 1 of 3 Solve for the following. (Use the following as necessary: 〈E), kB, Q, and T.) 0 In(Q) Substitute into a In(Q) to give a new equation for S. (Use the following as necessary: , kB, Q, and T.)

The rate of UN absorption process is _____ the rate of fluorescence process. The rate of fluorescence process is _____ the rate of phosphorescence process. (a) faster than (b) slower than (c) about the same as In the following molecules, which one may have the highest fluorescence efficiency? _____; which one may have the highest phosphorescence efficiency? _____ (a) Naphthalene (C_10H_10) (b) 1 -Chloro-Naphthalene (C_10H_9Cl) (c) 1-Bromo- Naphthalene (C_10H_9uBr) (d) 1-Iodo-Naphthalene (C_10H_9I) The C - 0 group in acetone (CH_3CO CH_2) has a strong absorption line at 189 nm, and a weak absorption line al 280 nm. The line at 189 nm corresponds to a _____ transition; and the line at 280 nm corresponds to a _____ transition. (a) pi rightarrow pr* (b) pi rightarrow n (c) n rightarrow pi* (d) pi* rightarrow n There are 8 objects distributed in the configuration of {0, 1, 2, 3, 0, 0, 0, 2}. It weight W = _____. (a) 3360 (b) 1680 (c) 840 (d)2010 The energy (epsilon) and partition function (q) of a molecular system are the contributions from different motions, such as translation (T), rotation (R), vibration (V), and electronic motion (E). How they are related? _____ (a) epsilon = epsilon^T + epsilon^R + epsilon^V + epsilon^E; q = q^T + q^R + q^V + q^E (b) epsilon = epsilon^T + epsilon^R + epsilon^V + epsilon^E; q = q^T times q^R times q^V times q^E (c) epsilon = epsilon^T times epsilon^R times epsilon^V times epsilon^E; q = q^T times q^R times q^V times q^E (d) epsilon = epsilon^T times epsilon^R times epsilon^V times epsilon^E; q = q^T + q^R + q^V + q^E