How is dryness fraction an intensive property?
Intensive properties are those which are independent of the mass(we need to assume every other property to be constant).Let us take 1 kg of air-water vapour mixture and let "x" be its dryness fraction.Now,if you take 2kg of the same mixture the dryness fraction will be the same because it depends on the proportion of the air and water vapour in the mixture and we have to keep other things constant as mentioned above. So,proportions of the two has to be kept constant.Thus,it don't depend in the mass and hence intensive property.I hope this might clear your doubt.
Why are partial molar properties intensive properties?
A partial molar property describes how an extensive property varies with changes in molar composition of a solution. Technically it is a partial derivative of the extensive property with respect to the amount of component of interest, assuming constant temperature, pressure, and components not of interest.An easy way to find if a property is intensive is to find two extensive properties that divide to define that property. For example, temperature (intensive) is kinetic energy (extensive) divided by number of molecules (extensive). In this way, you can find that partial molar is basically an extensive property divided by number of molecules (extensive). Therefore, it is an intensive property.
Are molarity and molality intensive properties? If so, why?
Yes, they are intensive properties. There are at least two ways to think about it:The number of moles is extensive, and so is volume (or mass). Dividing one extensive variable by another gives an intensive variable.If you have a solution of a certain molarity/molality, and you remove some of the solution. You still have the same molarity/molality as before.
Is it possible to have 0 intensive properties?
No. It is impossible to have 0 intensive property.Because if see the examples of intensive property, temperature, pressure, boiling point, melting point, density, etc. are intensive property which does not depend on mass of the substance. If you see the above examples, every substance have atleast boiling point and melting point. Hence 0 intensive property is not possible.
How is pressure an intensive property?
Because its value does not depend on the size of the system for which it is measured.Pressure does not depend on the number of particles being measured. In an ideal gas [1], P = ρRT. This only depends on density and temperature - both which are size-independent.Pressure can also be classically defined as Force per unit Area. The ratio of two extensive properties is an intensive property. Force is an extensive property because F = m*a, and mass is extensive (as it depends on the number of particles). The product of an intensive and an extensive property is extensive.Meanwhile, area is also an extensive property (as it depends on the size of the system). So P = F/A. = extensive/extensive = intensive.[1] though the case of an ideal gas may be an oversimplification.
Extensive and intensive properties HELP?
Intensive properties are [ independent ] of the amount present . They include density, temperature, Molecular Mass or Weight , specific gravity, specific volume, composition, etc. Some intensive properties are : rho , T , M , SG , v , x mole fraction , y mole fraction Extensive properties depend upon [ extent of system ] on the amount present. Extensive properties include mass , weight , mole, and volume.
Is electrode potential an intensive property or an extensive property?
Intensive. The units of potential are q/C, or charge/coulomb. So like how density (intensive) is a function of mass (extensive), similarly potential (intensive) is a function of charge (extensive). A better way to think about this is to consider how the potential is dependent on material properties of a battery while it’s not dependent on how much charge is stored in the electrodes. HTH!
Thermodynamics: Intensive properties does not depends on the quantity of the matter. Then how are molarity and mole fractions intensive properties?
In the case of those specific examples, the explanation is pretty straightforward. Those are intensive properties simply by being defined as a ratio with regard to the quantity of interest.Molarity is an intensive variable about mass. Mass is an extensive variable. If you have two jars that each contain a gram of material, those things add. You have two grams total. To get to molarity, you divide by volume. You have two grams in two jars. That's 2grams/2jars, or 1 gram/jar. How much is in the first jar? 1 gram /jar. Second jar? 1 gram/jar. Same thing, no matter how many 1 gram jars you have. Those don't add, because it's a ratio, not an absolute. There is always 1 gram of material in a 1 gram jar.The same thing goes for mole fraction. If you buy a box of Legos that contains 100 green Legos and 900 red Legos, the mole fraction of green Legos is 0.1. What if you buy another box? Also 0.1. What about both boxes together? Still 0.1, because now you just have 200 green Legos in 1800 red Legos. Since it's a ratio, the factor of two is on both the top and the bottom and it cancels right back out, returning the original, simplified ratio.
Why do colligative properties depend only upon the no. of moles?
Thanx for a2a.By definition, colligative properties are properties of solutions that depend upon the ratio of the number of solute particles to the number of solvent molecules in a solution, and not on the type of chemical species present.Also, by definition, mole fraction is equal to ratio of amount of constituent to total amount of all constituents in a mixture.So colligative properties like increase in boiling point and osmotic pressure would obviously depend on the mole fraction