Why would one liquid have a lower boiling point another liquid?
965934
Because of the amount of energy it takes to break the bonds of the molecules in the liquid. If one liquid has a substance that has strong bonds, it will have a higher bowling point than a substance with weak bonds. (bond strength has to do with if it's a covalent or ionic bond, if its a single or double bond, and the number of bonds.)
363447
this re minds me of a kind of heat called latent heat.this is the heat a subtance requires to change it state without changing it temperature,so water changes from liquid to steam at the same temperatutre if it assumes it latent heat of vapourization.thus water could be liquid at 100*c and also steam at the same temperature.
273947
Distillation is a method used to seperate substanced based on their boiling points.\n\nIf you have a mixture of say....water and sand, one way to seperate them would be to evaporate away the water, leaving the dry sand behind.  This also works for other things, like a solution of water and alcohol.  Since alcohol has a lower boiling point (meaning that it has a higher vapor pressure at a given temperature than water), it will evaporate quicker than water when you heat the solution.\n\nWhen you lower the pressure above a liquid, the liquid boils at a lower temperature.  A liquid will boil when its vapor pressure eqauls the pressure above the liquid, so if you lower pressure, you lower its boiling point.\nWhen you lower the pressure substancially (like with a vacuum) liquids will boil much easier (some even at room temperature), meaning that you do not have to heat them up quite as much in order to boil them.
585025
I don't know that you can, different solvents react differently to pressure, so I don't think it's a one eqaution fits all kind of process.  That's why they all have different graphs for phase vs temperature/pressure.  I'm sorry.\nSounds like you have a pretty high boiling point though, the things I've taken off that had to be real high temp were water, toluene, and pyridine.  Could it be one of them?  They smell pretty different, so you'd know which.  \nThat's an interesting question though, I've never stripped a solvent that I didn't know what it was.
837121
Hmmm.. The one affecting the boiling point is the intermolecular force..\nAs you can see, most of the compound here is polar. \n\nTherefore all you have to do is if the compound is consisted only of 2 elements (Group 17), you'll have to calculate the electronegativity difference. The more difference between them, the boiling will increase as well.\n\nIf there is more than 2 atoms in a molecule, you'll have to see the dipole moment magnitude (a.k.a polarity). The higher the magnitude, the higher the boiling point will be.\n\n\npeace\nvixklen
1096429
Ice requires a crystalline lattice structure. The salt ions (Na+ and Cl-) physically interfere with the formation of that lattice structure by standing in the way of water molecules. A lower temperature is therefore necessary to form ice and so water that contains ionic salt can drop to lower temperatures before forming ice. The same general effect applies to boiling water. Because the salt prevents molecules from escaping into the atmosphere as gas, the boiling point is raised.\n\nNote: I assume you meant 0 degrees Celsius. The Fahrenheit scale is somewhat different, since water freezes at 32 degrees Fahrenheit. But don't let these numbers cause you to believe something different is going on in the salt/water/ice mixture. The Celsius scale is set such that water freezes at 0 degrees (absent salt). This doesn't mean that at 0 Celsius and below there is no temperature or energy. Just the same, below 0 degrees Fahrenheit compounds still have energy and temperature. Scientists tend to use another scale which more accurately depicts true temperature, which is the Kelvin scale. In the Kelvin scale, absolute zero- the temperature at which all molecules and atoms stop moving- is really 0. But 0 Kelvin is much lower than either 0 Celsius or 0 Fahrenheit. To convert from Celsius to Kelvin, just add 273 degrees (or subtract 273 from Kelvin to Celsius). So 0 Celsius is actually 273 degrees Kelvin.  \n\nIn any case, if you were looking for an answer that has to do with the chemical properties of the salt/ice/water mixture, and why, for example, salt tends to lower the freezing point (or raises the boiling point), my first answer is right.  Any solute you add to a solvent will change the colligative properties of the solvent.  It interferes with the organization of water molecules such that they have a harder time aligning into a crystalline ice pattern, and therefore a lower temperature is required for ice to form. Note also that whenever you have an ice/water mixture, the entire mixture maintains the same temperature until all of the water has turned to ice. That is, in pure water that contains ice, the water will stay at 0 degrees Celsius until all the water has turned to ice, and then the ice will gradually drop in temperature. The salt just lowers that freezing point, but the same applies, just that the salt/water/ice mixture remains at that lower freezing point until all water as frozen, then it drops further in temperature.
199280
Salt causes the freezing point of water (and any other solvent for that matter) to be lowered. Thus, a salt solution freezes at a lower temperature than pure water. This phenomenon is called "freezing point depression." The extent to which the temperature is lowered is a function of the molality (moles of solute per kilogram of solution). That means that the more salt you add, the lower will be the freezing point.
947849
The higher the altitude, the lower the atmospheric pressure. The less atmospheric pressure that bears down on the surface of the liquid, the easier it is for water molecules to escape into the air. Thus, the water comes to its full rapid boil at a lower temperature in the mile-high city of Denver than it can in coastal Miami. For each thousand feet above sea level, the boiling point of water drops almost 2° F.
288379
It all depends on your altitude!because at higher altitudes, there is less pressure keeping the water in a liquid state, so it can boil at a lower temperature. For example, you can boil water on top of Mount Everest much quicker than at sea level. The standard boiling point at sea level, however, is around one hundred degrees Celsius.
881033
This could be a tricky question because you should also add the information "Under 1 atm or ambient pressure" in front of the question because it is also related to the answer of your question in certain extent. At 1 atm and 25 deg C condition, the reason why CO2 is a gas at room temperature while water is a liquid at room temperature because they have different boiling points.\n\nCO2 has a boiling point (b.p.) of -78.5 deg C while water has a boiling point of 100 deg C. Under atmospheric pressure (1 atm or 760 torr) condition, room temperature (25 deg C) is higher than the boiling point of CO2 and lower than the boiling point of water, CO2 is a gas while H2O is liquid at room temperature. The main reason behind their very different boiling point has to do with how the molecules are interacting with each other. However, you should also aware that the state of CO2 being a gas and that of water being liquid at 25 deg C may not be valid for pressure other than 1 atm. If you keep increasing the surrounding pressure, CO2 can turn to liquid even at 25 deg C!!\n\nFor CO2, different molecules are attracted to each other by weak van der Waal's force and also dipole-dipole attraction.\n\nFor water molecules, apart from those two intermolecular bonds, hydrogen bonding is also available between different water molecules. Hydrogen bond is the strongest type of bond among all intermolecular bonds; this greatly increase the attraction between different water molecules, and hence, it has a much higher boiling point than CO2.
1420
Good question.   Could be a number of reason, but my guess would be that you have some salt in your boiling water.    When NaCl solution is placed in a flame the Na cation gets ionized and yellow light is given off.    It doesn't take much salt for you to see this effect.   You will see this even with regular tap water, since it also has a small amount of salts dissolved in it.    \nIn fact, standard distilled water is usually not pure enough to avoid this effect.    That's why chemist buy special stills to make ultrapure water for experiments.
152501
You really should write a more detailed question.  But I think you're asking "why do things melt and boil?"\nA solid will convert into a liquid when the Intermolecular forces are over come by the raising average Kinetic engery(Temperature) and then it boils when those forces are over come enough to break away and become a gas.
338742
Boiling point elevation, which means salinity increases the boiling point, and thus lowers the evaporation rates.
776438
Dont know if this is relevant to your question, but I know water can boil at this temp range if pressure is reduced enough.
131793
Various minerals that exist in the water could cause the boiling point to fluctuate.\n\nAs an example, people add salt to water that they are boiling in order to lower the boiling point of the water.  On the converse scale, salt is also used to lower the freezing point as well, which is why roads are salted to avoid icing of the surface.\n\nAside from sodium, water can contain other natural minerals, which will also affect the boiling and freezing points.  Elevation and pressure will also have an effect on this as well, depending upon whether you are at or below sea level.\n\nI imagine that if you were perfectly at sea level, boiling only distilled water, it would probably be the closest to 100 degrees that you can get.
356469
The lower the air pressure, the lower the boiling point of water.
845233
Indeed; when different liquids are mixed, they can be separated by this process. Each liquid has its own boiling point. In fractional distillation, the temperature is brought to the temperature of the substance of the lowest boiling point, then distilled off.  The temperature is raised and the process is repeated.  Oil refineries use this process; called cracking, wherein a tall reaction chamber is used and the low boiling point substances are removed from the top and the lowest at the bottom.  Hope this helps.