Why is only one hydrogen atom acidic in acetic acid, but all 3 hydrogen atoms in phosphoric acid are ionizable?

That happens because of the structure of the two molecules, i.e. the atoms to which those acidic hydrogens are bonded to.

Take acetic acid, for example. Its looks like this

The acidic hydrogen in acetic acid is the one bonded to the pxygen atom. Because oxygen is a very atom, the bond is forms with hydrogen will be quite .

That implies that the electrons will spend most of the time around the oxygen atom, leaving the hydrogen atom electron deficient nad causing it to be less tightly held.

The partial positive charge that arises on the hydrogen atom can be easily attacked by a water molecule, which is a . Moreover, the negative charge that gets created after the hydrogen is picked off can be easily stabilized by .

On the other hand, the other three hydrogen atoms are bonded to a carbon. As you know, the ##”C-H”## bond is considered to be , which implies that the hydrogen atom will not develop a partial positive charge.

This means that its bond with carbon will be strong enough to stop a water molecule from being able to pluck it off.

Now take a look at phosphoric acid’s

This time, all three hydrogens are bonded to oxygen atoms, which is what ultimately makes them ionizable.

All three can be easily attacked by water molecules and removed from the phosphoric acid molecule.

So, as a conclusion, hydrogen atoms that are attached to carbon atoms are not acidic, while hydrogen atoms attached to oxygen atoms are quite acidic.

Show more

Calculate Your Essay Price
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
The price is based on these factors:
Academic level
Number of pages
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Order your essay today and save 10% with the coupon code: best10