0
Measuring the temperature of the boiling point at different pressures.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
What is the simple physical test to show that a sample of water is pure?
A scientific test you do on water similar to a chemical test
How do you test for water?
To test for water you need to boil it. It's boiling point is 100 degrees Celsius
Why is it wrong to say that water boils at 100 degrees Celsius?
The boiling point of water depends on any additional chemicals that might be in it, and on the atmospheric pressure. PURE water boils at 100 degrees Celsius at "standard" sea-level pressure of 29.92 inches of mercury.
Boiling point of water in Death Valley?
Like water anywhere (pending altitude, which isn't a factor here) it boils at 100oC/182oF/373oK. Except altitude is a factor, since the boiling point of water varies by altitude and the barometric outside air pressure (which essentially adjusts the pressure altitude up or down). Although Death Valley is only 282 feet below sea level, that's enough to push up the boiling point by almost half a degree Fahrenheit, assuming the same barometric pressure. Both are important, because people often memorise their "local" boiling point, so that they can make allowances in cooking, without realising that the "corrected" boiling point can also vary, depending on local weather. Similarly, many sources of local barometric pressures are given "adjusted to sea level," so both have to be taken into account. Test it for yourself: http://www.csgnetwork.com/h2oboilcalc.html
Putting salt in water speeds up the boiling process?
No, it will lower the Boiling Temperature of Water. Try this test, bring a pot of water to a slow boil, and sprinkle some salt into the pot. The water will boil "harder" where the salt hits the water.
How can you tell that the melting of ice cube is a physical change?
You could test the resulting liquid by determining its boiling point and melting point. If they are the same as the boiling and melting points for water, then it is probably water and a physical change rather than a chemical change has occurred.
What is another name for the point pressure leak test?
The point pressure leak test, also known as the Valsalva leak test
A liquid unknown is insoluble in water and soluble in cyclohexane and alcohol with a boiling point of 145 C at 658 mm Hg. What is the substance?
To find the substance, you can use a Nomograph Table. Take the observed boiling point and the pressure to find the change in temperature correction. It was found that the actual boiling point was 3.5 degrees off what was stated, so the boiling temperature is 60.5 degrees Celsius. The compound has a boiling point of approximately 60.5 degrees (1) in water and (s) in cyclohexane and alcohol. Chloroform is extremely close to this, with its normal boiling point being 61 degrees Celsius and it matches everything else.
What is the point pressure leak test?
The point pressure leak test, also known as the Valsalva leak test, measures the amount of abdominal pressure required to induce leakage
How can the boiling point of a chemical tell you how pure it is?
a purity test for liquid is the boiling point.for example pure water boils at 100 degree C at normal atmospheric pressure, if an impurity such as salt is added the boiling point will be higher than this. (evaluation of boiling point)
What is saxitoxin's boiling point?
the boiling point for saxitoxin is 358 degrees. this test was carried out at the marine training and scientific centre in Bangkok Thailand. under pf kim rat bat.
Steps to see if adding salt to water change the temperature at which it boils?
To test if adding salt to water increases the boiling point of the water, do the following: boil a sample of pure water until it boils. Measure the temperature at which the pure water boils. Take another sample of pure water and add salt to it, then boil this sample under the same conditions. Measure the temperature at which the salt water boils. If the latter temperature is higher, salt does increase the boiling point of water.
