Editing Titration (section)

===Back titration===
Back titration is a titration done in reverse; instead of titrating the original sample, a known excess of standard reagent is added to the solution, and the excess is titrated. A back titration is useful if the endpoint of the reverse titration is easier to identify than the endpoint of the normal titration, as with [[Precipitation (chemistry)|precipitation]] reactions. Back titrations are also useful if the reaction between the analyte and the titrant is very slow, or when the analyte is in a non-[[Solubility|soluble]] solid.<ref>
{{Cite book
  | last = Kenkel
  | first = J.
  | title = Analytical Chemistry for Technicians
  | publisher = CRC Press
  | volume = 1
  | edition = 3
  | year = 2003
  | pages = 108–109
}}</ref>