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What is Polyprotic acid?

Updated: 4/28/2022
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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.

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Alexandrine Jones

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Q: What is Polyprotic acid?
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Is hc2h3o2 a polyprotic acid?

No, monoprotic H3C-COOH


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-


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.


Is acetic acid non polar?

No acetic acid is not polyprotic. Although the multiple Hydrogen's may lead you to believe it is. It is monoprotic due to the fact that only one of those hydrogen's is structually attached to an oxygen. H's bonded to carbons are no protic. The number of hydrogen atoms present in one molecule of acid cannot always be used to classify the acid as mono-, di-, or triprotic. For example, a molecule of acetic acid contains four hydrogen atoms, but it is monoprotic. Only one of the hydrogen atoms in acetic acid is acidic or ionizable. Whether No acetic acid is not polyprotic. Although the multiple Hydrogen's may lead you to believe it is. It is monoprotic due to the fact that only one of those hydrogen's is structually attached to an oxygen. H's bonded to carbons are no protic. The number of hydrogen atoms present in one molecule of acid cannot always be used to classify the acid as mono-, di-, or triprotic. For example, a molecule of acetic acid contains four hydrogen atoms, but it is monoprotic. Only one of the hydrogen atoms in acetic acid is acidic or ionizable. Whether


Why does successive acid dissociation constants Ka1 Ka2 etc of a polyprotic acid decrease in magnitude?

Polyprotic acids are acids with more than one ionizable proton. For example: phosphoric acid (H3PO4) has 3 ionizable protons, therefore it has 3 K a values. The reason successive acid dissociation constants decrease in magnitude is because it is more difficult for an H+ ion to leave a singly charged anion (like H2PO4-) than to leave a neutral molecule (like H3PO4); it's even more difficult to the proton to be "ripped off" from a doubly charged anion (like HPO42-).All polyprotic molecules follow this pattern:Ka1>Ka2>>Ka3The smaller the Ka value is, the easier the proton will be removed.Think of it as the positively charged proton is very attracted to the negative molecule. The more negative that molecule is, the harder it is to separate the proton. But when the molecule becomes less negative, the proton is easier to be removed because their is less of a negative attraction "clinging" it to the molecule.

Related questions

Is hc2h3o2 a polyprotic acid?

No, monoprotic H3C-COOH


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


What is the relationship of the successive equivalence-point volumes in the titration of a polyprotic acid?

the end point will be a simple multiple of the first


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 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.


Is acetic acid non polar?

No acetic acid is not polyprotic. Although the multiple Hydrogen's may lead you to believe it is. It is monoprotic due to the fact that only one of those hydrogen's is structually attached to an oxygen. H's bonded to carbons are no protic. The number of hydrogen atoms present in one molecule of acid cannot always be used to classify the acid as mono-, di-, or triprotic. For example, a molecule of acetic acid contains four hydrogen atoms, but it is monoprotic. Only one of the hydrogen atoms in acetic acid is acidic or ionizable. Whether No acetic acid is not polyprotic. Although the multiple Hydrogen's may lead you to believe it is. It is monoprotic due to the fact that only one of those hydrogen's is structually attached to an oxygen. H's bonded to carbons are no protic. The number of hydrogen atoms present in one molecule of acid cannot always be used to classify the acid as mono-, di-, or triprotic. For example, a molecule of acetic acid contains four hydrogen atoms, but it is monoprotic. Only one of the hydrogen atoms in acetic acid is acidic or ionizable. Whether


Why does successive acid dissociation constants Ka1 Ka2 etc of a polyprotic acid decrease in magnitude?

Polyprotic acids are acids with more than one ionizable proton. For example: phosphoric acid (H3PO4) has 3 ionizable protons, therefore it has 3 K a values. The reason successive acid dissociation constants decrease in magnitude is because it is more difficult for an H+ ion to leave a singly charged anion (like H2PO4-) than to leave a neutral molecule (like H3PO4); it's even more difficult to the proton to be "ripped off" from a doubly charged anion (like HPO42-).All polyprotic molecules follow this pattern:Ka1>Ka2>>Ka3The smaller the Ka value is, the easier the proton will be removed.Think of it as the positively charged proton is very attracted to the negative molecule. The more negative that molecule is, the harder it is to separate the proton. But when the molecule becomes less negative, the proton is easier to be removed because their is less of a negative attraction "clinging" it to the molecule.


Is HClO soluble?

Look up the word "polyprotic" in your assigned reading, and the answer will be self-evident.


What makes something a monoprotic acid?

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 --&gt; HSO4- + H3O+ THEN: HSO4- + H2O &lt;--&gt; 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.


Does acid dissolve in water?

This depends on how strong the acid is and whether or not it is polyprotic (or has more than 1 Hydrogen) But in general: In water, acids dissolve into the hydronium ion (H3O+) and the conjugate base. The hydronium ion is just an access proton, or Hydrogen (H) without the electron, making it a positive (H+). For example: Hydrochloric acid (a strong, monoprotic acid, formula = HCl) in water looks like: HCl + H20 ---&gt; H3O+ + Cl- Cl- is the conjugate base of HCl. H3O+ has the access H+ ion from the acid.


Which salt reacts with both HCI and HaOH?

There is are no such things as HCI or HaOH I think you mean HCl (with a lowercase L) and NaOH (with an N) What you are looking for is a partially neutralized salt of a polyprotic acid. Some possible salts include: sodium bicarbonate, NaHCO3 potassium dihydrogen phosphate, KH2PO4 lithium hydrogen phosphate, Li2HPO4 sodium hydrogen oxalate NaHC2O4 The metal ion doesn't matter much.