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Consider the titration of 30.0 ml of 0.030 M NH3 with 0.025 M HCl the equivalence point is reached when 36 ml of HCl titrant is added what is the pH at the equivalence point?
Cbrou31
pH = 5.56 at 36.0 ml(equivalence point)
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∙ 15y ago
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What is the purpose of a titration?
The purpose of a titration is to find the equivalence point (stoichiometric point) of a solution. At the equivalence point, the moles of the titrant and analyte are equal to one another. At the midpoint of the solution, the pKa value is equal to the pH value.
What is the difference between conductometric and volumetric titrations?
Coductometric titration: is based on the suddenly change of the conductivity at the equivalence point.Volumetric titration: the volume of a standardized titrant is measured at the eqivalence point.
What is the equivalence point of titration?
The equivalence point, or stoichiometric point, of a chemical reaction is the point at which an added titrant is stoichiometrically equal to the number of moles of substance (known as analyte) present in the sample: the smallest amount of titrant that is sufficient to fully neutralize or react with the analyte.
What is meant by titrant in titration?
The titrant is the solution involved or used in a titration to determine the concentration of an unknown solution.
Why you useindicator in titration?
Most solutions used in titrations are colorless, therefore you cannot really estimate the equivalence point (the volume of added titrant that causes a stoechiometric reaction). However, slight variations in other factors such as acidity (pH) can be detected by means of an indicator, which will change color accordingly. This will notify you when you have reached the equivalence point.
The equivalence point reached when the pH reaches it maximum value?
No. The equivalence point is reached when the moles of titrant equals the moles of analyte.
What is the chemical process for back titration?
The chemical process for back titration is to titrate the analyte past the original end point/equivalence point, and then BACK titrate the excess titrant to equivalence.
What is the purpose of a titration?
The purpose of a titration is to find the equivalence point (stoichiometric point) of a solution. At the equivalence point, the moles of the titrant and analyte are equal to one another. At the midpoint of the solution, the pKa value is equal to the pH value.
What is the difference between conductometric and volumetric titrations?
Coductometric titration: is based on the suddenly change of the conductivity at the equivalence point.Volumetric titration: the volume of a standardized titrant is measured at the eqivalence point.
What is the equivalence point of titration?
The equivalence point, or stoichiometric point, of a chemical reaction is the point at which an added titrant is stoichiometrically equal to the number of moles of substance (known as analyte) present in the sample: the smallest amount of titrant that is sufficient to fully neutralize or react with the analyte.
What is meant by titrant in titration?
The titrant is the solution involved or used in a titration to determine the concentration of an unknown solution.
Why you useindicator in titration?
Most solutions used in titrations are colorless, therefore you cannot really estimate the equivalence point (the volume of added titrant that causes a stoechiometric reaction). However, slight variations in other factors such as acidity (pH) can be detected by means of an indicator, which will change color accordingly. This will notify you when you have reached the equivalence point.
What is titrant and analyte?
Analyte: the substance to be analyzed by titration. Titrant: the substance (with a known concentration) added to the analyte solution to perform a titration.
When should back titration be used instead of direct titration?
when we do not know nothing about the other titrant.
What is the Shape of titration curve for complexometric titration?
If we plot the pM (M= concentration of metal ion in the analyte) against the volume of titrant the titration curve takes the sigmoidal shape, plateau in the first part, sharp rise around the equivalence point and then again flat.
How does back titration differ from a direct titration?
direct titration involves the direct and stepwise addition of a standard titrant to the analyte whilst the back titration involves reacting a standard excess titrant wth an analyte solution of an unknown concentration, then reacting the excess (left over) titrant with an analyte of known concentration to determine the concentration of excess titrant.
What is the endpoint of a titration?
during a titration when a titrant completely furnished the sample then this is the end point of titration.
