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Is acid what is present in a solution at the equivalent point of a titration?
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What is the point in a titration at which the added solute reacts completely with the solute present in the solution?
It is the equivalence point.
The point at which a drop of base changes the color of an acid solution and the color persists?
titration
What are two ways to identify the equivalent point in a titration?
- using a color indicator- by potentiometry
What is the point where chemically equivalent properties are present?
equilibrium
What is the meaning of the term end point in titration and what is true about the system at the end point?
In titrations, the end point is when you have brought the tested sample to absolute neutral. At this point, if you add one more drop of titrating solution to the sample, you would change the pH sufficient to change the color of the indicator in the sample. This is the point at which you can determine the pH of the original solution, by calculating back the amount of titrating solution you had to add to the sample to neutralize it.
What is the point in a titration at which the added solute reacts completely with the solute present in the solution?
It is the equivalence point.
Discussion of titration?
Titration is the controlled addition and measurement of the amount of a solution of known concentration required to react completely with a measured amount of a solution of unknown concentration. Titration provides the equivalent volumes of acidic and basic solutions. In order to find this, MaVa/Ca formula needs to be used. In titration, when equal numbers of H3O+ and OH- from the acidic and basic solutions react, the resulting solution is neutral (water and salt). In titration, the end point would be the point at which the indicators change color; in this case the indicator turned pink. The equivalence point would the point at which the two solutions used in titration are present in chemically equivalent amounts. The indicator, phenothaylene, is used to determine the equivalence point of weak-acid/strong- base titrations.
What is the function of NH4CNS in estimation of the amount of copper present in a supplied solution by iodometric method?
The end-point of the titration is more sharper if NH4CNS exist in the solution;
In an acid-base titration equivalent quantities of hydronium ions and hydroxide ions are present a. at the beginning point. c. at the endpoint. b. at the midpoint. d. throughout the titration.?
At the endpoint.
What happened if some solution splashes out during the titration of NaOH?
If some solution splashes out during the titration of NaOH, the volume at the end point will be wrong.
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 equivalent point and end point in analytical chemistry?
The equivalence point is the point in a titration when the amount of added standard reagent is chemically equal to the amount of analyte. The end point is the point in a titration when a physical change occurring immediate after the equivalence point
A titration of an acid and base to the equivalence point results in a noticeably acidic solution It is likely this titration involves?
a strong acid and a weak base.
The point at which a drop of base changes the color of an acid solution and the color persists?
titration
What can be observed about the rate of change of pH of a solution near the end point of titration?
S
Why did the solution turn to pink at the of the titration?
because the solution react with sulphuric acid. other than that, the end point is indicated.
Why is titration repeated without indicator?
In a titration the pipette is used to transfer 25 cm3 (usually to ±0.05 cm3) of a solution into a conical flask. Another solution that reacts with the solution in the conical flask is carefully added from a burette until it has all exactly reacted. This is called the end point of the titration (or equivalence point of the reaction). There needs to be a way of knowing when the end point is reached. An indicator may be needed. Often a titration is repeated until successive titres are within 0.1 cm3.
