6c.19 f

Acidity
Basicity
The Conjugate Seesaw

Moderators: Chem_Mod, Chem_Admin

Fdonovan 3D
Posts: 101
Joined: Sat Aug 17, 2019 12:16 am

6c.19 f

Postby Fdonovan 3D » Sat Dec 07, 2019 3:22 pm

Which is the strongest acid, H2CO3 or H2GeO3? (Justify your answer)

In the answer key, it says H2CO3 is the stronger acid because C is more electronegative. However, I thought that when comparing acids in which the only difference is the central atom, you compare the bond strengths for elements in the same group. Since Ge and C come from the same group (not the same period), shouldn't the justification come from comparing the bond strengths, not the electronegativity?

Ethan Lam 4A
Posts: 69
Joined: Thu Jul 11, 2019 12:17 am

Re: 6c.19 f

Postby Ethan Lam 4A » Sat Dec 07, 2019 3:37 pm

Electronegativity and bond strengths both play a factor in determining acid strength. Since it is more electronegative, it becomes more polar which makes it easier to dissociate.

Ruby Richter 2L
Posts: 103
Joined: Thu Jul 25, 2019 12:17 am

Re: 6c.19 f

Postby Ruby Richter 2L » Sun Dec 08, 2019 9:22 am

So, in this case, the difference in electronegativity would dominate over the difference in bond strength?

Yun Su Choi 3G
Posts: 61
Joined: Wed Sep 30, 2020 10:09 pm

Re: 6c.19 f

Postby Yun Su Choi 3G » Sun Dec 06, 2020 2:57 pm

What does it mean when high electronegativity makes an O-H bond more polar?
Does it mean that the electron density on O is shifted to a high electronegative atom that causes H to have a more partial positive charge?

John Calonia 1D
Posts: 67
Joined: Wed Sep 30, 2020 9:49 pm

Re: 6c.19 f

Postby John Calonia 1D » Mon Dec 07, 2020 12:37 pm

I believe the more elctronegative one is more able to stabilize the resulting ion so it is easier for the acid to lose its hydrogen when put into solution.


Return to “Acidity & Basicity Constants and The Conjugate Seesaw”

Who is online

Users browsing this forum: No registered users and 2 guests