<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Skip Navigation

26.21: U

Difficulty Level: At Grade Created by: CK-12
universal gas law
relates the volume of a gas with pressure, temperature, and number of moles of gas; written mathematically as \begin{align*}PV = nRT\end{align*}
universal gas law constant (R)
constant equal to \begin{align*} \frac {PV} {nT}\end{align*}, where the pressure, volume, moles, and temperature of the gas are represented by \begin{align*}P\end{align*}, \begin{align*}V\end{align*}, \begin{align*}n\end{align*}, and \begin{align*}T\end{align*}, respectively; the value and units of R depend on the units of \begin{align*}P\end{align*} and \begin{align*}V\end{align*}, and two commonly used values of R are \begin{align*}0.08206 \ \mathrm{L} \ \mathrm{atm}\ \mathrm{K}^{-1} \ \mathrm{mol}^{-1}\end{align*} and \begin{align*}8.314 \ \mathrm{J} \ \mathrm{K}^{-1} \ \mathrm{mol}^{-1}\end{align*}
unsaturated compound
an organic molecule containing double or triple bonds
unsaturated solution
a solution in which a given amount of solvent has dissolved less than the absolute maximum amount solute at that temperature
unshared electron pair
an unshared electron pair, also known as a non-bonding pair of electrons or as a lone pair of electrons, is found in a filled valence orbital that is not used in the formation of a covalent bond

Image Attributions

Show Hide Details
Date Created:
Feb 23, 2012
Last Modified:
Mar 26, 2015
Files can only be attached to the latest version of section
Help us create better content by rating and reviewing this modality.
Loading reviews...
Please wait...
Please wait...
Image Detail
Sizes: Medium | Original