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For molecules of similar polarity, larger molecular masses would equate to higher boiling points. This is because molecules with larger masses would have stronger intermolecular van der Waals forces.

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Q: How does molecular mass effect boiling point?
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What is the relationship between boiling point and molecular size?

The bigger the mass the higher the boiling point.

Which property of gas affects the rate at which it spreads throughout a laboratory?

molecular mass

As the molecular mass of a nonpolar liquids increase the boiling points does what?

If the mass increases with the volume (ie if the density remains the same) then the boiling point remains constant. If the volume remains contstant with rising mass (ie greater density) then the boiling point increases.

How will determine Molecular weight by Landsberger method?

we can determine the molecular weight from landsberger experiment for elevation of boiling point by using the formula M2=(KBW2)*1000/T'W1 where M2=molecular mass Kb=ebullioscopic constant or molal boiling point constant W2=mass of solute W1=mass of solvent T'=change in temprature

Why does nitrogen have a lower boiling point than bromine?

nitrogen has lower mass and weaker molecular forces of attraction

How are freezing point depression and boiling point elevation useful?

the main applicative use of freezing point depression and boiling point elevation is to calculate the molecular mass of a non volatile solute in a pure solvent.

What has a higher boiling point CO2 or SO2?

SO2 has a higher boiling pt because it has a greater molecular mass, SO2 is a pola r molecule which forms dipole-dipole forces which increases the boiling point

Why do compounds like water have low boiling point?

Actually, for its molecular mass, water has a very high boiling point because the moleculaes stick together due to hydrogen bonding.

Which colligative property is better one to determine molecular mass of an unknown solute in a soution?

Probable the boiling point elevation.

Why has 1iodobutane higher boiling point than 1chlorobutane?

The molecular mass of iodobutane is higher so density and boiloing point also higher than chlorobutane.

How the moleculer formula of a compound is calculated if its emperical formula is known?

The gram molecular mass of the molecule must be measured by some independent method such as freezing point depression or boiling point elevation. Then the factor by which to multiply all of the subscripts in the empirical formula to get the molecular formula is the closest integer to the ratio of gram molecular mass to the gram molecular mass of a single unit of the empirical formula.

How do you calculate the molecular weight of an unknown?

There are three properties that can be used and they are the boiling point elevation, freezing point depression, and osmotic pressure. The molar mass is equal to mass of the unknown divided by the moles of the unknown.

What is the relationship between melting point and molecular mass?

The larger the molecular mass the higher the melting point will be and the longer it will take to melt

Is butane gas less volatile than propane?

Yes, the molecular mass of propane is 44 while that of butane is 58, higher is the molecular mass of an alkane higher would be the boiling point therefore less would be the volatility.

Does greater mass change boiling temp?

The boiling point is not changed.

What is the approximate molar mass of a molecular solute if 300 g of the solute in 1000 g of water causes the solution to have a boiling point of 101C?


What is the molecular mass of 64.3 grams of solute in 3.90 x 10 2 grams of water raises the boiling point to 100.680 c?

The boiling point constant of water is: kb = 0.512. The equation for boiling point elevation is (change in Temp) = kb * Bb where Bb is the molality of the solution taking dissociation into account.

What effects would meltingfreezing or boiling have on the conservation of mass?

No effect. The mass remains the same.

What physical properties of the sample is most helpful to determine if the liquid is water color mass volume boiling point?

boiling point. (The Boiling point of water is 100 oC.)

What phase change involves gas becoming a solid?

Vaporization (in mass, at the boiling point) or evaporation (on the surface and under boiling point).

What are 5 pysiacal properties?

mass, volume, density, melting point, boiling point

What is the trend of boiling point and melting point when the atomic mass is increases?

temperature will increases

Which characteristic of the compound C5H12 causes it to have a higher normal boiling point than C2H6?

Predominantly its higher molecular mass. The higher mass of a molecule of C5H12 requires more energy to cause it to move fast enough to escape its intermolecular bonding than does the lower mass C2H6 molecule. The intermolecular bonding itself may be stronger in the higher molecular mass molecule, but this is relatively minor compared with the difference in molecular mass.

Which solute an electrolyte or a non electrolyte has the greater effect on the boiling point when a given amount of each solute is dissolved in the same mass of water?

The effect depends only on the concentration of solutes.

Which type of interaction plays an important role in the high boiling point of water?

Hydrogen bonding. The high boiling point of water, approximately 100 degrees Celsius at sea level, is due to the high number of hydrogen bonds each water molecule can have relative to its low molecular mass.