How does the alcohol thermometer measure the temperature of boiling water even though the boiling point of alcohol is 78c?
Table of Contents
- 1 How does the alcohol thermometer measure the temperature of boiling water even though the boiling point of alcohol is 78c?
- 2 Which thermometer can be used to measure boiling water?
- 3 What are the function of alcohol in alcohol thermometer?
- 4 Why is it better to take an alcohol thermometer instead of a mercury thermometer while you travel to the mountain region?
- 5 Can you use a thermometer in boiling water?
- 6 What is alcohol thermometer and what is the advantage of using alcohol thermometer?
How does the alcohol thermometer measure the temperature of boiling water even though the boiling point of alcohol is 78c?
Explanation: The boiling point of ethanol is +78 ∘C . This limits the top measurement of the thermometer to this temperature. The THINNER the glass capillary, the greater the distance between the two points and the more accurate the reading on the thermometer.
Why is alcohol thermometer not used to measure the temperature of hot places?
Its expansion rate is not uniform. Its boiling point is 78°C. So, it can’t be used for measuring the temperature above 78°C. Due to this reason the alcohol thermometer is not used to measure temperature in very warm places.
Which thermometer can be used to measure boiling water?
A Celsius thermometer will measure the boiling point of water at 100° and its freezing point at 0°; a Fahrenheit thermometer will measure the same events at 212° for the boiling point of water and 32° as its freezing point.
Can liquid alcohol be used in thermometers to measure temperature?
Ethanol-filled thermometers are used in preference to mercury for meteorological measurements of minimum temperatures and can be used down to −70 °C (−94 °F). The physical limitation of the ability of a thermometer to measure low temperature is the freezing point of the liquid used.
What are the function of alcohol in alcohol thermometer?
An alcohol thermometer is a thermometer which utilizes the expansion and contraction of alcohol in response to temperature changes to measure the temperature. A number of different alcohols can be used, depending on the environment where the thermometer is being utilized, with ethanol being among the most common.
What are the advantages of alcohol thermometer?
A thermometer comparison
| advantages | disadvantages |
|---|---|
| Alcohol thermometer (compared to a mercury thermometer) | |
| lower freezing point (-114 C) | less durable (alcohol evaporates) |
| larger coefficient of expansion | alcohol can polymerise |
| less hazardous | fluid loss by evaporation hard to avoid |
Why is it better to take an alcohol thermometer instead of a mercury thermometer while you travel to the mountain region?
Mercury has a greater coefficient of thermal expansion than alcohol. This means a column of mercury will expand and rise more than a column of alcohol for the same temperature change. As a result, you can get finer readings with mercury. Mercury is poisonous, and a broken thermometer in the mouth is not good.
What are the disadvantages of alcohol thermometer?
Can you use a thermometer in boiling water?
You can test a thermometer in boiling water or an ice bath; doing both is not a bad idea either. To test in boiling water: Water at sea level boils at 212° F* or 100° C. The thermometer is accurate if it registers 212° F or 100° C.
Can digital thermometer be used in boiling water?
Solution : No, a clinical thermometer cannot be used to measure the temperature of boiling water because it has a small range and might break due to extreme heat.