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How can the boiling point of a chemical tell you how pure it is?
Wiki User
∙ 11y ago
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)
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoBoiling point is a good place to start and is good for known samples.
A technique called high performance may be used. Mass spectrometry (combined with gas chromatography if sample is able to be suitably derivatised) is also a powerful instrument to analyse a substance.
Wiki User
∙ 13y agoMelting point indicates purity by examining the substance to be tested and when you find out that's what it is to be indicated.
Wiki User
∙ 11y agoIf the boiling point of a compound is equal to the actual than it predicts that a given compound is pure and if it is greater than the given then there are number of impurities in it.
Wiki User
∙ 11y agono answer, sorry QU ;)
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What is the temperature 20000 feet altitude?
The boiling point of water at an elevation of 2300 feet is approximately 207.89 degrees F or 97,717 degrees C. The boiling point of water at an elevation of 2300 meters is 198.243 degrees F or 92.357 degrees C.
How can you tell that substance compound by looking at its formula?
Characteristics of a substance are called properties. Substances have chemical properties - how they react with other substances and physical properties - boiling and melting point, colour, solid liquid or gas, smell...
Did salt and sugar affect the boiling temperature of water exactly the same?
yes, but i couldn't tell you the mechanics of it.
What is the temperature of a tap water?
The hot water supply can be set at 60oC (140oF) or slightly higher. Most safety experts suggest 50oC (125oF) as the maximum. The lowerst temperature from a municipal supply is likely around 1 or 2oC (34oF)
What is the chemical compound A2SO4?
i was hoping u would tell me lol
What is the boiling point of an ionic bond?
Chemicals have boiling points, bonds do not. But let us say, you are asking what the boiling point is of a chemical that has an ionic bond. Again, not all ionic type chemicals (which are generally called salts) have the same boiling point. I can, however, tell you that the boiling point of a salt tends to be very high, in the thousands of degrees.
What are two ways that you could tell the difference between pure water and salt water?
Taste Smell Melting Point Boiling Point Density Residue after it evaporates
Explain why the boiling point and the melting point can be used to help identify substances?
100 degrees mate. 100 degrees Celsius is the boiling point for pure water at 1atm or sea level. The boiling point is useful in identifying chemical compounds. Chemical compounds have different boiling points that are specific to it' s chemical composition. If you know what the boiling point or melting point is you can also tell if your compound is pure, as any impurities will change these.
How can you tell a pure substance from a mature by its boiling point?
take water for example, if water boils at 100 degrees Celsius then it is pure. if the boiling temperature turns out to be higher or lower (most of the time it is higher) then a substance is impure. salt water boils at 102.8 degrees Celsius.
How can you tell if glycol is ethylene or propylene?
You could determine its boiling point. The boiling point of ethylene glycol is 197.3 oC, and the boiling point of propylene glycol is 188.2 oC.
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 are the properties of Phosphate such as Melting Point Acidity Boiling Point etc?
"Phosphate" is only part of a chemical name. You would need to provide the rest in order for us to tell you what the properties of the compound are.
What information about the compound is not part of the chemical formula?
The information that isn't given in the formula is that it doesn't tell you the position of the atoms.
Can you tell if a liquid is a pure substance or a solution by looking at it?
No. On the visible and even the microscopic level a solution is indistinguishable from a pure substance.
Is the boiling point of water higher than the boiling point of water?
physiological answers tell us that In neurology water may be boiling at a lower substantial rate then non water water.
Compare and contrast pure substances and solutions?
It can be quite difficult unless you know the properties of the pure substance in the solution. For instance, image you have a solution that is water-based. The boiling point of water under standard conditions is 100 °C. If you measure the boiling point of a water-based solution, it will and your mother will not have the same boiling point (the presence of ions in the water will raise the boiling point). You could also measure other properties, such as the density, freezing point, color or absorption spectrum, NMR spectrum, elemental weight percent, etc. using a variety of analytical methods. However, none of these methods will do much good unless you have a good idea what the solution might be composed of. If not, the task is extremely challenging!
How can you tell that melting boiling dissolving are physical changes?
The physical and chemical properties, and chemical composition, are not changed after a physical change.
