How can you tell
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How can you tell
How can you tell that the polyprotic acid or base is polyprotic by looking at the formula?
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Re: How can you tell
If there's more than one H in front of the anion, let's say,
H2SO4, or H3PO4
It'll be polyprotic because there is more than 1 hydrogen in front.
H2SO4, or H3PO4
It'll be polyprotic because there is more than 1 hydrogen in front.
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Re: How can you tell
Each H present in the anion will go on to form one hydronium ion. In HCl, one H begets one hydronium ion per molecule HCl (monoprotic). In H2S04, two H's will beget two hydronium ions per molecule H2So4 (biprotic/polyprotic). This is important to remember in calculating the pH of a substance.
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Re: How can you tell
William Chan 1F wrote:If there's more than one H in front of the anion, let's say,
H2SO4, or H3PO4
It'll be polyprotic because there is more than 1 hydrogen in front.
Exactly! We should count the number of H atoms in the front of the anion, rather than count all H atoms, because not all H atoms would play a role in donating H atoms when dissociating in water. For example, CH3COOH is monoprotic, because only the last H atom would be donated, contributing to the fact that CH3COOH is an acid.
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Re: How can you tell
If an acid has more than one hydrogen which it can dissociate, it is polyprotic.
Re: How can you tell
Therefore, can only acids be polyprotic?
Because if a base is polyprotic doesn't that mean we are referring to its acidic properties of being able to give off protons so its an acid?
Because if a base is polyprotic doesn't that mean we are referring to its acidic properties of being able to give off protons so its an acid?
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Re: How can you tell
Are polyprotic acids stronger or weaker with the more hydrogens that they have? I thought that if something has multiple hydrogens it is more likely to give off a proton, therefore dissociates more, and is therefore stronger of an acid.
Re: How can you tell
Since polyprotic acids and bases donate or accept more than one proton, respectively, there must be more than one hydrogen in the anion.
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Re: How can you tell
105289321 wrote:If an atom can donate more than one H+
Do you have an example of this?
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Re: How can you tell
Sukhkiran_Kaur_3F wrote:If there is more than one H in front, it'll be polyprotic.
Is it specifically just in front or is it in general? I am a little confused as to whether or not all the H contribute to it being polyprotic?
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Re: How can you tell
Shail Avasthi 2C wrote:If an acid has more than one hydrogen which it can dissociate, it is polyprotic.
This makes sense, thank you!
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