Conductometric titration of weak acid and strong base (weak acid vs strong base)/Conductometry
This video describes how to draw the conductometric titration curve for a weak acid with a strong base (acetic acid/CH3COOH vs sodium hydroxide/NaOH). It explains about the Conductometry, Principle of Conductometric titration. It explains on how to draw the conductometric titration curve for the mixture of acids with a strong base. Introduction of Conductometry, Conductance, advantages and disadvantages of conductometric titration, applications of conductometric titration.
Before titration – only CH3COOH present
CH3COOH does not dissociate easily – low conductance
Initial addition of NaOH – CH3COOH and small amount of CH3COONa
CH3COOH does not dissociate easily due to common ion effect of CH3 COO- – slight decrease in conductance
During titration till equivalence point /neutralisation point –
CH3COONa ionises better than CH3COOH – conductance increases slowly
At equivalence point/neutralisation point – CH3COO- and Na+ are present
Conductance increases
After equivalence point – excess NaOH is added
accumulation of OH - with high ionic conductivity – conductance increases drastically
High concentration of salts in the solution does not give accurate results
Presence of other electrolytes other than the species to be analysed will not give accurate results
Limited use for redox titration.
Видео Conductometric titration of weak acid and strong base (weak acid vs strong base)/Conductometry канала Revathi Purushothaman
Before titration – only CH3COOH present
CH3COOH does not dissociate easily – low conductance
Initial addition of NaOH – CH3COOH and small amount of CH3COONa
CH3COOH does not dissociate easily due to common ion effect of CH3 COO- – slight decrease in conductance
During titration till equivalence point /neutralisation point –
CH3COONa ionises better than CH3COOH – conductance increases slowly
At equivalence point/neutralisation point – CH3COO- and Na+ are present
Conductance increases
After equivalence point – excess NaOH is added
accumulation of OH - with high ionic conductivity – conductance increases drastically
High concentration of salts in the solution does not give accurate results
Presence of other electrolytes other than the species to be analysed will not give accurate results
Limited use for redox titration.
Видео Conductometric titration of weak acid and strong base (weak acid vs strong base)/Conductometry канала Revathi Purushothaman
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