Page 1 of 1

Cl- and F-

Posted: Fri Dec 07, 2018 6:25 pm
by Meachelle_Lum_1I
Why is it that Cl- does nothing when dissolved in water but F- has the potential to gain a proton and become HF?

Re: Cl- and F-

Posted: Fri Dec 07, 2018 6:50 pm
by Andre_Galenchik_2L
As HCl is a strong acid, it will stay dissociated as H+ and Cl- (an acid is stronger the more likely it dissociates and releases a H+). On the other hand, as HF is a weak acid, it will more likely go back into HF as it does not like to be in its dissociated form of H+ and F-.

Re: Cl- and F-

Posted: Fri Dec 07, 2018 7:26 pm
by Gabriela Aguilar 4H
HCL when disassociated it does so completely which makes it a strong acid because it won't go back with the H+ and therefore is able to donate the proton. On the other hand, HF will disassociate but not completely and therefore will go back with H+ making a weak acid because it is harder to take away the proton from it.

Re: Cl- and F-

Posted: Fri Dec 07, 2018 10:42 pm
by Joaquin Andrade
Since HCL is a strong acid, it will stay dissociated in water. This is also true for HBr and HI.

Re: Cl- and F-

Posted: Sat Dec 08, 2018 8:36 am
by Claudia Luong 4K
Strong acids completely dissociate. HCl would completely dissociate into H+ and Cl- ions and therefore won't be able to turn back into HCl while HF is a weaker acid, so it doesn't completely dissociate. Since HF doesn't completely dissociate, F- has the ability to pick up a proton/hydrogen and become HF