3 Mechanics 3.8 Mechanics of Fluids and Gases
Density of liquids
P2140100
Density of glycerol as a function of temperature.
Principle
Westphal / Mohr density balance
The density of water and glycerol is determined as a function of temperature using the Mohr balance. Task The density of water and glycerol is measured in 1 to 2 °C steps over a temperature range from 0 to 20 °C, then in larger steps up to 50 °C. What you can learn about ▪ ▪ ▪ ▪ ▪ ▪
Hydrogen bond Water anomaly Volume expansion Melting Evaporation Mohr balance
Function and Applications Precision balance with balance bar with unequal arm length for determination of densities of liquids and solid state bodies
Main articles Westphal/ Mohr density balance Immersion thermostat Alpha A, 230 V Bath for thermostat, makrolon External circulation set f. thermostat Alpha A Cooling coil for thermostat Alpha A Glycerol 250 ml Water, distilled 5 l
45016-00 08493-93 08487-02 08493-02 08493-01 30084-25 31246-81
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Equipment and technical data ▪ the bearing of the balance bar consists of a low friction steel cutting edge, with height variable support rod ▪ balance bar equipped with 9 positions for counter weight pieces ▪ delivered in wooden storage box, counter weight pieces ▪ tweezers, Reimann`s bouyancy body with wire, thermometer ▪ glass cylinder, 100 ml, grid basket with hook for density determination of solid state bodies, beaker ▪ Weight range: 0...2 g/ccm, Sensitivity: 0.0001 g/ccm 45016-00
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