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Effects of Alcohol on the Vibrational Relaxation in Liquid CS2
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Ultrasonic attenuation measurements were made in liquid carbon disulfide over a frequency range from 5 to 155 Mc at a temperature of −63°C. Further measurements were made when methyl, propyl, and butyl alcohol were added in concentrations up to 0.06 mole percent. In each case the relaxation frequency is increased linearly with the amount of alcohol added. The relaxation frequency for pure CS2 is 27.8 Mc. The shifts of relaxation frequency in liquid CS2 with alcohol added are:
methyl alcohol 24.7 Mc/mole percent
propyl alcohol 38.7 Mc/mole percent
butyl alcohol 50.7 Mc/mole percent.
The collision probabilities (P) of like and unlike molecules in the liquid as compared to the gas are unexpectedly close, (PAB/PAA)liq being approximately 0.65 (PAB/PAA)gas. Possible reasons for this will be considered.
Acoustical Society of America (ASA)
Title: Effects of Alcohol on the Vibrational Relaxation in Liquid CS2
Description:
Ultrasonic attenuation measurements were made in liquid carbon disulfide over a frequency range from 5 to 155 Mc at a temperature of −63°C.
Further measurements were made when methyl, propyl, and butyl alcohol were added in concentrations up to 0.
06 mole percent.
In each case the relaxation frequency is increased linearly with the amount of alcohol added.
The relaxation frequency for pure CS2 is 27.
8 Mc.
The shifts of relaxation frequency in liquid CS2 with alcohol added are:
methyl alcohol 24.
7 Mc/mole percent
propyl alcohol 38.
7 Mc/mole percent
butyl alcohol 50.
7 Mc/mole percent.
The collision probabilities (P) of like and unlike molecules in the liquid as compared to the gas are unexpectedly close, (PAB/PAA)liq being approximately 0.
65 (PAB/PAA)gas.
Possible reasons for this will be considered.
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