Login

Welcome, Guest. Please login or register.

May 16, 2024, 10:37:14 am

Author Topic: Acids & Bases - ionisation VS dissociation?  (Read 4488 times)  Share 

0 Members and 1 Guest are viewing this topic.

dux99.95

  • Trailblazer
  • *
  • Posts: 38
  • Respect: 0
Acids & Bases - ionisation VS dissociation?
« on: March 30, 2017, 10:31:11 am »
0
Is this correct?

Bases - dissociate in water
Acids - ionise in solution

Thanks (:

jakesilove

  • HSC Lecturer
  • Honorary Moderator
  • Part of the furniture
  • *******
  • Posts: 1941
  • "Synergising your ATAR potential"
  • Respect: +196
Re: Acids & Bases - ionisation VS dissociation?
« Reply #1 on: March 30, 2017, 10:41:25 am »
0
Is this correct?

Bases - dissociate in water
Acids - ionise in solution

Thanks (:

Sort of, by the Arrhenius definition of acids and bases. However, this is NOT the definition that we use in the HSC. In the HSC, we define Acids/Bases by the Bronsted-Lowry definition, which states that

Acids are proton (Hydrogen ion) donors
Bases are proton (Hydrogen ion) acceptors

ATAR: 99.80

Mathematics Extension 2: 93
Physics: 93
Chemistry: 93
Modern History: 94
English Advanced: 95
Mathematics: 96
Mathematics Extension 1: 98

Studying a combined Advanced Science/Law degree at UNSW

Tino_BCP

  • Adventurer
  • *
  • Posts: 20
  • Respect: 0
Re: Acids & Bases - ionisation VS dissociation?
« Reply #2 on: July 08, 2017, 12:30:44 pm »
0
So what is the difference between ionisation and dissociation??

Sine

  • Werewolf
  • National Moderator
  • Great Wonder of ATAR Notes
  • *****
  • Posts: 5135
  • Respect: +2103
Re: Acids & Bases - ionisation VS dissociation?
« Reply #3 on: July 08, 2017, 12:34:22 pm »
0
So what is the difference between ionisation and dissociation??
ionisation formation of ions so from covalent stuff e.g. HCl ionises into H+ and Cl-
Dissociation would be stuff like NaCl into it's constituent atoms Na+ and Cl- so it's for weak bonds e.g. ionic bonds

having not done HSC not sure how in detail you need to know this stuff so I hope this helps!! :)