Page 1 of 1

Stronger acid?

Posted: Wed Dec 04, 2019 10:53 pm
by curry 1E
Which would be the stronger acid HClO or HClO2? I know that you first look at bond length and then anion strength but how would you figure this one out?

Re: Stronger acid?

Posted: Wed Dec 04, 2019 10:58 pm
by gabbymaraziti
HCLO2 would be the stronger acid, because the greater the # of oxygen atoms attached to the central atom, the stronger the acid.

Re: Stronger acid?

Posted: Sun Dec 08, 2019 6:12 pm
by DHavo_1E
curry 1E wrote:Which would be the stronger acid HClO or HClO2? I know that you first look at bond length and then anion strength but how would you figure this one out?



Hello,

For future reference, I would like to add that you look at bond lengths only for binary acids (H-A), because for oxoacids such as HClO and HClO2, they have the same bond (an O-H bond). For oxoacids, the one with more oxygens will be a stronger acid due to increasing amounts of electron-withdrawing atoms which will weak the O-H bond by pulling electrons away from it, and thus make it easier for a proton to be released.

Re: Stronger acid?

Posted: Sun Dec 08, 2019 8:09 pm
by Jacob Motawakel
HClO2 would be the stronger acid because it has a greater number of oxygen atoms attached to the central atom, making the oxidation number of the central atom greater.

Re: Stronger acid?

Posted: Sun Dec 08, 2019 8:11 pm
by Rishika Yadav 3D
HClO2, because the oxygens are more electronegative, pulling electrons away from the hydrogen. This makes the hydrogen easier to break off.

Re: Stronger acid?

Posted: Sun Dec 08, 2019 8:14 pm
by alex_4l
In regards to bond strength, HCLO2 stronger because of the types of bonds in the lewis structure (ex: double, single) or because of the bond angles?

Re: Stronger acid?

Posted: Sun Dec 08, 2019 8:23 pm
by Deepika Reddy 1A
HClO2 is the stronger acid because it has more oxygens. The oxygens make the conjugate base, or anion, more stable. This is because of resonance, where the negative charge on the oxygen delocalizes over the entire molecule, which stabilizes it.

Re: Stronger acid?

Posted: Sun Dec 08, 2019 8:28 pm
by Sean Sugai 4E
To find out which one is the stronger acid between HClO and HClO2, look at the number of oxygens. Because both molecules have a H and Cl, it falls onto the number of O to determine which is the stronger acid. The general rule is the greater number of O's, the stronger the acid. This is because the oxidation state of the molecule is higher, so it has a stronger electron withdrawing power.

Re: Stronger acid?

Posted: Sun Dec 08, 2019 10:17 pm
by Philip
Which would be the stronger acid HClO or HClO2? I know that you first look at bond length and then anion strength but how would you figure this one out?

HClO2 is stronger because of how there's more oxygen and a higher electron pulling ability, which delocalizes the electron

Re: Stronger acid?

Posted: Mon Dec 09, 2019 3:42 am
by ABombino_2J
HClO2 is the stronger acid because it pulls electrons away from the H-C bonds making them easier to break which results in more H+ ions in solution.

Re: Stronger acid?

Posted: Sun Oct 18, 2020 4:30 pm
by Armen_Isayan_3F
HC1O2 is definitely stronger than HC1O because when the electronegativity of the central atom decreases this in turn weakens the O-H bond, and most importantly to answer your question the acidity will increase when the bond is weakened.