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What will be the pH at the equivalence point of the titration in question 3?
Wiki User
∙ 12y ago
For strong acid/strong base reactions: pH 7 is the equivalence point
For titration of a weak base with strong acid : pH 6-3 is the equivalence point
For titration of a weak acid with strong base : pH 8-11 is the equivalence point
For weak acid/weak base reactions it is also around pH 7, but it happens so NON-sharply, vague, that titrations can't be used for these.
Wiki User
∙ 12y ago
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What is the approximate pH of the equivalence point in the titration pH curve?
Without seeing the curve, we can't answer this.
How can the equivalence point in a titration be detected by using a pH meter?
In strong acid base titrations when pH meter shows the value 7 then it is equivalence point.
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?
pH = 5.56 at 36.0 ml(equivalence point)
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 pH indicator could be used in a titration?
It depends on the equivalence point of the solutions you're titrating.
What is the approximate pH of the equivalence point in the titration pH curve?
Without seeing the curve, we can't answer this.
How can the equivalence point in a titration be detected by using a pH meter?
In strong acid base titrations when pH meter shows the value 7 then it is equivalence point.
Why does the pH change rapidly at the equivalence point of a titration?
The equivalence point represents a region where the amount of acid to base (or base to acid) concentration is equal. Before the equivalence point there is a greater amount of acid (or base, depending on the titration). After the titration there is a greater amount of base (or acid). This reverse in dominance results in a dramatic change in pH.
If the equivalence point of a titration is 5 what range of pH should the indicator be?
The indicator should change color right at the equivalence point, so 5.
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?
pH = 5.56 at 36.0 ml(equivalence point)
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 pH indicator could be used in a titration?
It depends on the equivalence point of the solutions you're titrating.
In a titration when does the indicator change color?
when the equivalence point of a titration is achieved.. Added: (More precisely:) The equivalence point is the point where the number of moles of base equal the number of moles of acid. The end point is the point where the indicator being used changes color (also 'indication point)'. If the indicator is chosen correctly, the end point will essentially be exactly as near as possible at the equivalence point. The point of the titration is to find the equivalence point -- the end point is just a very close approximation to it. This is because the pH of the solution changes very rapidly close to the equivalence point. Therefore, the indicator will change color very close to the equivalence point because of the steepness of the pH change
What does a titration graph of a weak acid with a strong base look like?
The pH at point of halfway titration is at pKa level (this even might be at pH above 7)andpH of equivalence point (end point) is not at pH = 7.0 , but (sometimes far) above 7.0.
How does the equivalence point of a titration differ from its end point?
The equivalence point is the point where the number of moles of base equal the number of moles of acid. The end point is the point where the indicator being used changes color (also 'indication point)'. If the indicator is chosen correctly, the end point will essentially be exactly as near as possible at the equivalence point. The point of the titration is to find the equivalence point -- the end point is just a very close approximation to it. This is because the pH of the solution changes very rapidly close to the equivalence point. Therefore, the indicator will change color very close to the equivalence point because of the steepness of the pH change.
What is the pH at the stoichiometric point of the titration of 25.0 mL of aqueous hypochlorous acid with 0.20 M KOH aq?
The equivalence or stoichiometric point of a titration of a strong acid versus a strong base is always equal to pH 7.
The true equivalence point in these titration was at pH7 What is the pH range for the color change of phenolphthalein?
Phenolphthalein changes from colorless to red in the range of pH = 8.0 to 9.6
