Hach-Lange TITRALAB 840_845 Reference Manual - Manual (Page 144)

Titra Lab ® TitraLab 840 and 845 Reference Manual
Page 144
Reaction X Std
+ Y Titr Enter stoichiometric coefficients for the calibration if molar unit (M,
mM) has been selected
To determine the X and Y stoichiometric coefficients:
The reaction is: X Std + Y Titr ->
where:
• 1 mole of titrant gives X eq of titrant
• 1 mole of standard gives Y eq of standard
To balance the reaction, Y mole(s) of titrant are required to titrate X
mole(s) of standard.
Example:
Titrant
sodium hydroxide (NaOH). 1 mole of NaOH gives 1 eq of NaOH.
Standard
citric acid (C
3
H
5
0 (COOH)
3
). 1 mole of citric acid gives 3 eq of citric
acid.
Chemical reaction
3 NaOH +1 C
3
H
5
O(COOH)
3
-> C
3
H
5
0 (COONa)
3
+ 3H
2
O
Enter
Reaction = 1 Std + 3 Titr ->
Enter in:
Edit reagent > Results
Range available:
(1 to 20) Std + (1 to 20) Titr ->
Reagent
addition ID Option available with TitraLab 845.
Name of the reagent to be added by a titration method. The reagent
can be selected from the User list or created from the Catalogue list.
Enter in:
Edit method > Parameters (If Addition = Yes)
Edit reagent > Calibration parameters (If Addition = Yes)