Chapter 12 Multiple choice questions

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. This question is concerned with the high-temperature behaviour of the vibrational partition function

equation12.6).
Which one of the following statements is correct?

At temperatures below 1000 K, molecules containing hydrogen will have vibrational partition functions with values close to one. correct incorrect

The high temperature form of q_vib can only be used if the temperature is high with respect to the reduced vibrational temperature. correct incorrect

The high-temperature form of q_vib can be used only at high temperatures. correct incorrect

In calculating the vibrational partition function one can ignore vibrations involving hydrogen atoms at temperatures below 1000 K. correct incorrect

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. This question is concerned with the vibrational partition function

(equation 12.4)
Which one of the following statements is most likely to be correct?

For polyatomic molecules the largest error in evaluating the vibrational partition function comes from stretching modes involving hydrogen. correct incorrect

For polyatomic molecules the largest error in evaluating the vibrational partition function comes from intra-molecular hydrogen bonds. correct incorrect

For polyatomic molecules the largest error in evaluating the vibrational partition function comes from not taking into account that torsional modes can turn into internal rotations at a given temperature. correct incorrect

For polyatomic molecules, the largest error in evaluating the vibrational partition function comes from stretching modes that do not involve hydrogen. correct incorrect

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