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possibly if it has been contaminated by other substances (as compared to original boiling point - it seems as though it has 2 different boiling points)
things such as sodium chloride (table salt) raise the boiling point of water and lower its melting point
note though that a pure liquid can never have 2 different boiling points - the boiling point is a property of a a liquid and will never change no matter what.
alternatively if the fluid concerned is a mix of 2 different liquids (eg. alcohol mixed in water) the liquid with the lower boiling point (eg. alcohol) will boil off first, then the remaining fluid will continue heating up until the 2nd boiling point is reached (eg. of water). thus the fluid seems to boil at 2 different temperatures
What else can I help you with?
When would distillation be used instead of crystallisation?
Depend on liquid property, if it had similar boiling point but different freezing point then it might consider crystallisation and distillation when the boiling is easier to separate them. If the liquid is easily thermally decompose then it might need to consider crystallisation. there is no definite answer to this question. Very depending on what chemical working with.
Which method would be most useful in separating two substances with very different boiling points?
distillation
Which substance do you expect to have the greatest evaporation rate?
Substances with lower boiling points tend to have higher evaporation rates, as they can more easily transition from a liquid to a gas. Therefore, substances such as acetone or ethanol, which have low boiling points, would be expected to have higher evaporation rates compared to substances with higher boiling points like water or oil.
Which liquid is having the highest rate of evaporation?
The liquid with the highest rate of evaporation would generally be the one with the lowest boiling point. This means that substances like acetone or ethanol, which have low boiling points, will evaporate more quickly than water or oil.
Do all metals have low boiling points?
First of all I would like to say that Metals usually have very high melting and boiling points. If you really find no mistake in this question then the answer is certainly NO. But if you feel now that the question is wrong and it would be "non metals" in place of "metals" then the answer would certainly be Yes.
What types of mixture do fractional distillation separate?
for mixtures that are miscible but have different boiling points
How would you separate two liquids in a mixture that have different boiling points?
You can separate two liquids with different boiling points using simple distillation. In this process, the mixture is heated until the liquid with the lower boiling point vaporizes, then the vapor is condensed back into liquid form and collected separately. This allows the components to be separated based on their boiling points.
When would distillation be used instead of crystallisation?
Depend on liquid property, if it had similar boiling point but different freezing point then it might consider crystallisation and distillation when the boiling is easier to separate them. If the liquid is easily thermally decompose then it might need to consider crystallisation. there is no definite answer to this question. Very depending on what chemical working with.
Distillation can be used to seperate solutions of miscible liquids because?
Distillation relies on the differences in boiling points of the liquids in the solution. When the solution is heated, the liquid with the lower boiling point evaporates first, and then condenses back into a separate container. This allows for the separation of the two liquids.
How can you use boiling points and melting points to determine a solid liquid or gas that an element would be in at a certain temperature?
If the temperature is below the melting point then the element is a solid.If the temperature is above the melting point but below the boiling point, then the element is a liquid.If the temperature is above the boiling point, then the element is a gas.
What is a liquid-liquid solution that can be separated by distillation?
An example of a liquid-liquid solution that can be separated by distillation is the mixture of ethanol and water. This is because ethanol has a lower boiling point than water, allowing the two components to be separated based on their different boiling points during distillation.
If you have two substances that are the same size and have similar densities how ever they have different boiling points how would you separate them?
You can separate them by a process called fractional distillation. This involves heating the mixture to a temperature in between the boiling points of the two substances. As the mixture heats up, the substance with the lower boiling point will vaporize and rise, while the substance with the higher boiling point remains liquid. The vapor is then collected, cooled, and condensed back into liquid form, resulting in the separation of the two substances.
Can you change the boiling point of a liquid?
- You can change the boiling point of a liquid if you add different solutions or chemicals that alter its physical and chemical properties. - Also it can depend on pressure. If, for instance, you were on a mountain the pressure would be higher so the boiling point would be lower.
What process would most effectively separated two liquids with different molecular polarities?
Fractional distillation would be the most effective process to separate two liquids with different molecular polarities. In this method, the liquids are heated to their respective boiling points, vaporized, and then condensed back into liquid form. This separation process works based on the different boiling points of the liquids due to their varying polarities.
What separation technique involves using different boiling points?
Distillation. By applying heat to the mixture it will boil, but the different liquids within the mixture will boil or vapourise at different temperatures. This means that the different vapours can be drawn off at different stages and then condensed back into liquid form. One example of where this is used on an industrial scale is at a oil refinery. The crude oil extracted from oil fields is heated in large distillation towers. These then separate out different products from heavy oil (higher boiling point), through to petrol (medium boiling point) to propane (low boiling point).
Which method would be most useful in separating two substances with very different boiling points?
distillation
Which substance do you expect to have the greatest evaporation rate?
Substances with lower boiling points tend to have higher evaporation rates, as they can more easily transition from a liquid to a gas. Therefore, substances such as acetone or ethanol, which have low boiling points, would be expected to have higher evaporation rates compared to substances with higher boiling points like water or oil.
