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Question
I was wondering if there is a table that shows the volume vs temperature for Mercury (Hg)?
Asked by:
Zvi Szwarc
Answer
Such a table is in the CRC Handbook of Chemistry and Physics, CRC Press, Boca Raton, FL.
The following is an excerpt:
| °C | ml/gr |
| -10 | 0.0734205 |
| 0 | 0.073554 |
| 10 | 0.0736877 |
| 20 | 0.0738215 |
| 30 | 0.0739552 |
| 40 | 0.0740891 |
| 90 | 0.0747594 |
| 140 | 0.0754334 |
| 190 | 0.0761128 |
| 240 | 0.0767996 |
| 290 | 0.0774958 |
| 340 | 0.0782033 |
The following equation gives the volume accurate to about 1 part in 70,000, equivalent to
0.1 °C:
V(ml./gr.) = 0.073554 + 0.000013245 * T + 1.22823*10-9 * T2
The volume (or density) versus temperature is something many of us use daily since it is
the basis of mercury thermometry. You will note that the volume equation is nearly
linear, as is usually assumed in Hg thermometer calibration.
Answered by:
Scott Wilber, President, ComScire - Quantum World Corporation
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