Sample Essay on How Temperature Affects Molar Mass

Temperature Affects Molar Mass

To understand how temperature affects molar mass, you need to know how each of these properties work. Molar mass refers to a physical property that is defined as a mass of a particular substance divided by the amount of that substance. Kg or Mol is the base SI unit of molar mass. However, molar masses have been express in the form of g/mol historically.

On the other hand, temperature refers to the numerical measure of cold and hot. Temperature is measured by detecting heat radiation, kinetic energy, particle velocity and the most common measurement of temperature is the thermometric material’s behavior. Temperature can be calibrated in different temperature scales including Kelvin, Fahrenheit and Celsius among others.

Evaluation of molar mass and the gyration radii studies have been conducted on several occasions and in varying temperatures for branched and linear polyethylene in chloronaphthalene solutions. In various cases, parameters of molecular size have been identified as increasing on the basis of increased temperature of the solution.

According to this observation, molar mass can change depending on the temperature by up to 50 percent. Influence of temperature on molar mass is higher in elements that have higher molar mass. This is usually the case in linear polyethylene than in branched polyethylene. Influence of temperature on molar mass is also noticeable when temperatures are below the normal melting point of the normal crystalline polymer.

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There are suggestions that effects of temperature on molar mass can be due to the gradual dissociation of aggregates of the element and their inter-chaining. A relationship is also established between molar mass and intrinsic viscosity of elements. However, effects of temperature on molar mass are fractionated when conditions are unfavorable to the persistence of the aggregate elements of the substance.

Several studies have also been published indicating the effects of temperature on molar mass in relation to viscosity. Increased temperatures increase viscosity of substances and this has also impact on molar mass. Effects of temperature have also been associated with the impact that temperature has on diffusion. Temperature affects kinetic energy of the particles of substances. Tiny particles that form any substance called the atoms are always moving even when the substance is not. This is what causes diffusion when substance such as gas is left in an open space.

The rate of diffusion has been established to be inversely proportional to molar mass when temperatures are kept constant. This implies that increasing temperatures decrease molecular mass while increasing the rate of diffusion.

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Sources

http://group.chem.iastate.edu/Greenbowe/sections/projectfolder/GrahamsLaw.htm

https://www.toktol.com/notes/section/chemistry/0/experimental-chemistry

http://onlinelibrary.wiley.com/doi/10.1002/pol.1964.100020411/abstract

http://en.wikipedia.org/wiki/Temperature

http://en.wikipedia.org/wiki/Molar_mass