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LIQUID SOUND SPEEDS
Liquid Sound Speeds
Note: All the following sound speeds are calculated at 25°C.
The speed of sound in liquids at temperatures other than 25°C are calculated as follows.
Example:
Substance Form Index Specific
Gravity
Sound
Speed
∆
∆∆
∆
v/ºC -
m/s/ºC
Glycol C
2
H
6
O
2
1.113 1658 2.1
Water, distilled (49,50) H
2
O 0.996 1498 -2.4
For every 1°C higher than 25°C take off the value in the
Δ
v/°C- m/s/°C column.
Glycol at 50°C = 1658 - (2.1 x 25) = 1605.5
For every 1°C less than 25°C add on the value in the
Δ
v/°C- m/s/°C column.
Glycol at 5°C = 1658 + (2.1 x 20) = 1700
If the value has a minus sign in front of it then do the opposite of above.
Distilled Water at 50°C = 1498 - (-2.4 x 25) =1558
Distilled Water at 10°C = 1498 + (-2.4 x 15) = 1462