55 At low temperatures the Debye 8 of NaCl and KCl. which have the same crystal structure. are 310 K and 230 K respectively The lattice specific heat of KCI at 5K is 3-8 x 10-2 J mol- K-' Estimate the lattice specific heat of NaCI at 5 K and of KCI at 2 K
55 At low temperatures the Debye 8 of NaCl and KCl. which have the same crystal structure. are 310 K and 230 K respectively The lattice specific heat of KCI at 5K is 3-8 x 10-2 J mol- K-' Estimate the lattice specific heat of NaCI at 5 K and of KCI at 2 K
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Transcribed Image Text:55 At low temperatures the Debye 8 of NaCl and KCl. which have the same crystal
structure, are 310 K and 230 K respectively The lattice specific heat of KCI
at 5K 1s 3-8 x 10-2 J mol-K- Estimate the lattice specific heat of NaCl
at 5 K and of KCI at 2 K
Transcribed Image Text:Answers to above Problems.
Chapter 5, pp. 93-4
5.1. (a) > 144 K: (b) 0-16 K: (c) 0-136 K: (d) T = x required.
5.2. 6-3 x 10-97J: 6-3 & 10-8J: 71 J: 2700 J; >500 K.
5.3. 7470 J mol-: ~4000 J mol.
5.4. 169 K.
5.5. 1-55 x 10-2 J mol. 2-4 x 10-3 J mol .
5.6. (a) ~8000J: (b) ~640 J. (c) 2-89 J: 31:0-24 1: 10-31.
5.7. 1-2 x 10ms:1 nm: 1-2x 1013 Hz.
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