Search by property
From Bioblast
This page provides a simple browsing interface for finding entities described by a property and a named value. Other available search interfaces include the page property search, and the ask query builder.
List of results
- Activity + (The '''activity''' (relative activity) is … The '''activity''' (relative activity) is a dimensionless quantity related to the concentration or partial pressure of a dissolved substance. The activity of a dissolved substance B equals the [[concentration]], ''c''<sub>B</sub> [mol·L<sup>-1</sup>], at high dilution divided by the unit concentration, ''c''° = 1 mol·L<sup>-1</sup>: </br> ''a''<sub>B</sub> = ''c''<sub>B</sub>/''c''°</br>This simple relationship applies frequently to substances at high dilutions <10 mmol·L<sup>-1</sup> (<10 mol·m<sup>-3</sup>). In general, the concentration of a [[solute]] has to be corrected for the activity coefficient (concentration basis), ''γ''<sub>B</sub>,</br> ''a''<sub>B</sub> = ''γ''<sub>B</sub>·''c''<sub>B</sub>/''c''°</br>At high dilution, ''γ''<sub>B</sub> = 1. In general, the relative activity is defined by the [[chemical potential]], ''µ''<sub>B</sub></br> ''a''<sub>B</sub> = exp[(''µ''<sub>B</sub>-''µ''°)/''RT'']potential]], ''µ''<sub>B</sub> ''a''<sub>B</sub> = exp[(''µ''<sub>B</sub>-''µ''°)/''RT''])
