An acid disassociate in water because

  • Thread starter LogicalAcid
  • Start date
  • Tags
    Acid Water
In summary, acids dissociate in water because of the presence of hydrogen atoms, which react with water molecules to form hydronium ions. This results in a solution with a higher concentration of hydronium ions, making it acidic. Strong acids dissociate completely, while weak acids only partially dissociate. The dissociation of acids is a complex process influenced by various factors.
  • #1
LogicalAcid
137
0
For example, the stronger an acid the more the Ions disassociate in an aqueous solution, right?
If I have the idea right, an acid disassociates in water B/C of the reason it has Hydrogen in it (this is part of the reason) the Hyrdrogen atom in the acid separates from the other atom(s) it was attached to and binds with the H atom in the aqueous solution?

This is so hard...
 
Chemistry news on Phys.org
  • #2
It is not hard, you are just trying to run before you know how to crawl.

As a first approximation, there are strong acids - 100% dissociated in water - and weak acid, dissociated only partially. Let's not try to discuss why's for now, as they are combination of many factors.

If anything, hydrogen (more precisely - hydrogen cation, or just a proton) from acid dissociation reacts with water molecule, creating hydronium ion (cation) H3O+. It doesn't bind to hydrogen in water molecule, more like oxygen. And acids don't dissociate just because they have hydrogen in molecule - there is plenty of substances that have hydrogen in molecules and they are not acidic.
 
  • #3
Borek said:
It is not hard, you are just trying to run before you know how to crawl.

As a first approximation, there are strong acids - 100% dissociated in water - and weak acid, dissociated only partially. Let's not try to discuss why's for now, as they are combination of many factors.

If anything, hydrogen (more precisely - hydrogen cation, or just a proton) from acid dissociation reacts with water molecule, creating hydronium ion (cation) H3O+. It doesn't bind to hydrogen in water molecule, more like oxygen. And acids don't dissociate just because they have hydrogen in molecule - there is plenty of substances that have hydrogen in molecules and they are not acidic.

So the cation is attracted to the H20 atom, so now that H20 has a +1 charge it is known as Hydronium (H30+)?
 
  • #4
Yes. Just note you can't say

LogicalAcid said:
so now that H20 has a +1 charge it is known as Hydronium (H30+)?

It is no longer H2O that has a +1 charge, it was converted to something completely different.
 
  • #5


Your understanding of acid dissociation in water is correct. Acids contain hydrogen atoms that are easily released in water, leading to the formation of positively charged hydrogen ions (H+) and negatively charged ions of the remaining acid molecule. The strength of an acid is determined by its ability to release these hydrogen ions, which is influenced by factors such as the type of acid and its concentration in the solution. The more hydrogen ions that are released, the stronger the acid is considered to be. This process of dissociation is important in many chemical reactions and plays a crucial role in maintaining the pH balance in our bodies and in the environment.
 

1. What is an acid disassociate in water?

An acid disassociate in water is a chemical reaction where an acid molecule breaks apart into ions when it is added to water. This process is known as ionization or dissociation.

2. Why does an acid disassociate in water?

An acid disassociates in water because of the attraction between the polar water molecules and the charged ions of the acid. The water molecules pull the ions apart, causing the acid to break into its individual components.

3. What happens to the pH when an acid disassociates in water?

The pH of the water decreases when an acid disassociates in water. This is because the dissociated ions, such as H+ (hydrogen) and H3O+ (hydronium), increase the concentration of hydrogen ions in the solution, making it more acidic.

4. Can all acids disassociate in water?

All acids have the potential to disassociate in water, but the degree to which they do so varies. Strong acids, such as hydrochloric acid, completely disassociate in water, while weak acids, such as acetic acid, only partially disassociate.

5. How does temperature affect the disassociation of acids in water?

Higher temperatures can increase the rate at which acids disassociate in water. This is because the increased energy causes the molecules to move and collide more frequently, leading to more dissociation. However, extreme temperatures can also cause the acid molecules to break down, reducing the amount of disassociation.

Similar threads

Replies
8
Views
878
Replies
1
Views
3K
Replies
1
Views
934
Replies
2
Views
2K
Replies
3
Views
1K
Replies
16
Views
2K
Replies
3
Views
4K
Replies
15
Views
35K
Replies
6
Views
1K
Back
Top