When should back titration used instead of direct titration?

Back titration is typically applied in acid-base titrations: When the acid or (more commonly) base is an insoluble salt (e.g., calcium carbonate) When direct titration endpoint would be hard to discern (e.g., weak acid and weak base titration) When the reaction occurs very slowly.

Why is back titration more accurate?

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 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-soluble solid.

When should a back titration be used?

Potentiometric Titration Methods Potentiometric titration is a process in which the potential between two electrodes, one being the referent and the other the indicator electrode, is measured. As the acid titrant is added to the sample solution, the potential between these two electrodes will decrease.

What is the example of back titration?

Back titration works in the following manner (with an example) : 1: The substance or solution of unknown concentration (4 gm of contaminated chalk, CaCO3 ) is made to react with known volume and concentration of intermediate reactant solution (200 ml, 0.5N HCl). The reaction goes past the equivalence point.

Why is back titration with blank determination necessary?

This is done to ensure that either there are no substances in the solvent which can react with the titrant, or to estimate the amount of titrant that would react with the pure solvent. In this way, we can estimate the error that can be produced when the actual titration experiment is conducted.

What is difference between titrand and titrant?

A titration is a practical technique used to determine the concentration of an unknown solution. Therefore, it is a quantitative method. A titration is the reaction between the titrant and the titrand. The titrant is the substance having a known concentration, and the titrand is the analyte compound.

What is the difference between titration and neutralization?

The key difference between titration and neutralization is that titration is an analytical technique, whereas neutralization is a chemical reaction. Titration and neutralization are very important terms in chemistry. Titration is a technique that requires a specific apparatus, and it proceeds based on a neutralization reaction.

What is back titration in chemistry?

In chemistry, back titration is a technique used to determine the strength of an analyte through the addition of a known molar concentration of excess reagent.

How do you calculate a titration?

Calculate the Molarity. Use the titration formula. If the titrant and analyte have a 1:1 mole ratio, the formula is molarity (M) of the acid x volume (V) of the acid = molarity (M) of the base x volume (V) of the base.