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I would like to know why are naphthalene, acetanilide, benzoic acid, and adipic acid used in calibration of thermometers. Do those compounds have any specific property that makes them adecute for this process?
The purpose of calibrating a thermometer using naphthalene is to ensure that the thermometer is giving accurate and precise temperature readings. Naphthalene has a well-defined melting point of 80.2 degrees Celsius, making it a reliable substance for calibrating thermometers.
The calibration process using naphthalene involves heating the substance to its melting point and then inserting the thermometer into the naphthalene. The thermometer should read the melting point of 80.2 degrees Celsius. If it does not, adjustments can be made to the thermometer to ensure accurate readings.
No, not all thermometers can be calibrated using naphthalene. Only thermometers with a range that includes the melting point of naphthalene (80.2 degrees Celsius) can be calibrated using this substance.
It is recommended to calibrate a thermometer using naphthalene at least once a year. However, if the thermometer is used frequently or in critical applications, it may be necessary to calibrate it more often to ensure accurate readings.
If your thermometer does not read the melting point of naphthalene (80.2 degrees Celsius), it may need to be adjusted or calibrated. You can refer to the manufacturer's instructions for adjusting the thermometer or seek help from a professional calibration service.