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An acid which has the capability of donating not just one, but TWO H+ to a base during an acid-base reaction.
eg. Sulfuric acid and excess water
H2SO4 + H2O --> HSO4- + H3O+
THEN: HSO4- + H2O <--> SO4^2- + H3O+
(note the reversible arrow for the second one)
POLYPROTIC acids:
diprotic - can donate 2 hydrogen cations per molecule
triprotic - can donate 3..
etc.
What else can I help you with?
How is the formula for what common polyprotic acid?
The formula for a common polyprotic acid, like sulfuric acid, phosphoric acid, or carbonic acid, typically includes multiple hydrogen atoms that can each be ionized to release protons in solution. These acids can donate multiple protons in a stepwise manner, leading to their classification as polyprotic.
Is hc2h3o2 a polyprotic acid?
No, acetic acid (HC2H3O2) is a monoprotic acid because it can donate only one proton (H+) per molecule in a chemical reaction. Polyprotic acids can donate more than one proton.
How can one effectively solve polyprotic acid problems?
To effectively solve polyprotic acid problems, one should first identify the number of acidic hydrogen atoms in the acid. Then, calculate the equilibrium concentrations of each protonated form of the acid using the acid dissociation constants (Ka values). Finally, use the mass balance and charge balance equations to determine the concentrations of all species in the solution.
What is a poly protic acid?
A polyprotic acid can (in a multi-step reaction) donate more than one proton per molecule of acid.E.g. phosphoric acid can do 'the trick' three times:H3PO4 --> H+ + H2PO4-H2PO4- --> H+ + HPO42-HPO42- --> H+ + PO43-
Is H3 PO4 a weak acid?
Yes, H3PO4 (phosphoric acid) is a weak acid. It is a polyprotic acid, meaning it can donate multiple protons in a stepwise manner, resulting in a gradual decrease in acidity with each proton donated.
How is the formula for what common polyprotic acid?
The formula for a common polyprotic acid, like sulfuric acid, phosphoric acid, or carbonic acid, typically includes multiple hydrogen atoms that can each be ionized to release protons in solution. These acids can donate multiple protons in a stepwise manner, leading to their classification as polyprotic.
Is hc2h3o2 a polyprotic acid?
No, acetic acid (HC2H3O2) is a monoprotic acid because it can donate only one proton (H+) per molecule in a chemical reaction. Polyprotic acids can donate more than one proton.
What is the relationship of the successive equivalence point volumes in the titration of polyprotic acid?
the end point will be a simple multiple of the first
How can one effectively solve polyprotic acid problems?
To effectively solve polyprotic acid problems, one should first identify the number of acidic hydrogen atoms in the acid. Then, calculate the equilibrium concentrations of each protonated form of the acid using the acid dissociation constants (Ka values). Finally, use the mass balance and charge balance equations to determine the concentrations of all species in the solution.
What are polyprotic and monoprotic acids?
Monoprotic acids are acids that can donate only one proton (H⁺) per molecule during dissociation, such as hydrochloric acid (HCl). In contrast, polyprotic acids can donate more than one proton; they can release two or more protons in a stepwise manner, such as sulfuric acid (H₂SO₄), which donates two protons. The dissociation of polyprotic acids typically occurs in multiple stages, each with its own acid dissociation constant (Ka).
What is a poly protic acid?
A polyprotic acid can (in a multi-step reaction) donate more than one proton per molecule of acid.E.g. phosphoric acid can do 'the trick' three times:H3PO4 --> H+ + H2PO4-H2PO4- --> H+ + HPO42-HPO42- --> H+ + PO43-
Is H3 PO4 a weak acid?
Yes, H3PO4 (phosphoric acid) is a weak acid. It is a polyprotic acid, meaning it can donate multiple protons in a stepwise manner, resulting in a gradual decrease in acidity with each proton donated.
What is the relationship of the successive equivalence-point volumes in the titration of a polyprotic acid?
In the titration of a polyprotic acid, the successive equivalence-point volumes decrease because each equivalence point corresponds to the complete neutralization of one acidic proton. This leads to a decrease in the moles of acid present in the solution, requiring less titrant to reach the subsequent equivalence points.
How can one determine the pH of polyprotic acids?
To determine the pH of polyprotic acids, one can use the stepwise dissociation constants of each acidic proton and calculate the concentrations of the acid and its conjugate base at each stage of dissociation. By considering the equilibrium concentrations of the acid and its conjugate base, one can then use the Henderson-Hasselbalch equation to calculate the pH of the solution.
Is HClO soluble?
Look up the word "polyprotic" in your assigned reading, and the answer will be self-evident.
Is KOH a polyprotic acid?
Because KOH is potassium hydroxide, you can recall that in biology you must have learned about H+ being and acid and OH- being a base and K(OH) contains the one hydroxide making it a base, not an acid.
What category of acids are acidic foods?
Citric acid is a weak organic acid. It is a natural preservative/conservative and is also used to add an acidic, or sour, taste to foods and soft drinks. In biochemistry, the conjugate base of citric acid, citrate, is important as an intermediate in the citric acid cycle, and therefore occurs in the metabolism of all aerobic organisms.Citric acid is a commodity chemical, and more than a million tonnes are produced every year by fermentation. It is used mainly as an acidifier and as a flavoring.
