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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?
Wiki User
∙ 16y ago
The equivalence or stoichiometric point of a titration of a strong acid versus a strong base is always equal to pH 7.
Wiki User
∙ 16y ago
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What is the stoichiometric point of a titration called?
end point
What is the equivalence or stoichiometric point?
At the stoichiometric point of a titration, the total amount (in moles) of OH- ions that have been added as a titrant is exactly equal to the amount of H3O+ ions initially present in the beaker.The measured pH of at the stoichiometric point of a strong acid-strong base titration is expected to be that of pure water i.e. pH = 7. In practice, attainment of the stoichiometric point will be marked by sudden sharp rise in pH from a value significantly below 7 to a value significantly above 7.
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 stoichiometric end point?
when stoichiometric amounts of the titrant and the analyte have completely reacted. this differs from an endpoint which is when a secondary indicator's color change takes place. :) hope that helps
What is true about the amounts of H and OH at the stoichiometric point in a titration of a strong acid with a strong base?
'Stoichiometric' means equal amounts according to the balanced reaction. So at that point you have only water where H+ and OH- conc.'s are equal (1.0*10-7)
What is the stoichiometric point of a titration called?
end point
What is the equivalence or stoichiometric point?
At the stoichiometric point of a titration, the total amount (in moles) of OH- ions that have been added as a titrant is exactly equal to the amount of H3O+ ions initially present in the beaker.The measured pH of at the stoichiometric point of a strong acid-strong base titration is expected to be that of pure water i.e. pH = 7. In practice, attainment of the stoichiometric point will be marked by sudden sharp rise in pH from a value significantly below 7 to a value significantly above 7.
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 stoichiometric end point?
when stoichiometric amounts of the titrant and the analyte have completely reacted. this differs from an endpoint which is when a secondary indicator's color change takes place. :) hope that helps
What is true about the amounts of H and OH at the stoichiometric point in a titration of a strong acid with a strong base?
'Stoichiometric' means equal amounts according to the balanced reaction. So at that point you have only water where H+ and OH- conc.'s are equal (1.0*10-7)
Is the stoichiometric point for a weak acid strong base titration to be greater or less than 7?
it will be greater than 7.. as there will be more amount of base than acid//
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
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.
Difference between advantages and disadvantages of non aqueous and aqueous titration?
The advantage of non-aqueous media titrations is that often the end point is much more satisfactory to the person doing the experiment. Another advantage is that mediums that are not soluble in water can be used.
What is equivalance point?
In an acid-base titration for the reaction HCl + NaOH -> H2O + NaCl the equivalence point is when the hydrochloric acid and sodium hydroxide neutralise each other in equimolar proportions. When one mole of HCl is added to one mole of NaOH then equivalence point is reached.The 'end point' in a titration is when the indicator changes to the neutral colour (e.g. green) and this is usually an approximation of where the equivalence point is.As a result, we can deduce concentrations of unknown substances if we know the stoichiometric numbers of in the chemical reaction (i.e. 1HCl) and have a substance of known concentration react the unknown with.
What is titration error?
Titration error is simply the difference between the end point of a titration and the equivalence point of it. It can mathematically defined as Error = Vol(End Point) - Vol(Equivalence Point)
What is the function of phenolphthalein in titration?
to determine the end point of titration
