Solubility Flashcards
1
Q
Simplified term for what dissolves
A
Like dissolves In like
Eg: polar substances in polar substances
New bonds must have same strength or more than bonds broken = otherwise cannot dissolve
Wants to be energetically favourable
2
Q
What needs to happen for a substance to dissolve
A
-Solvent bonds break
- substance bonds just break
- new bonds form between solvent + substance
3
Q
Do ionic compounds dissolve
A
- most ionic compounds dissolve in polar solvents
- due to polarity of negative and positive ions
Al2O3 does not dissolve due in on IB too strong
4
Q
Do alcohols dissolve
A
- yes due to OH can form hydrogen bonds with water
- however hydrocarbon part of alcohol is insoluble due to being non-polar = solubility of alcahol depends on how large carbon chain is
5
Q
Do Halogenoalkanes dissolve
A
No
Polar dipoles not very strong
- Water forms stronger bonds with itself than with Halogenoalkane ( H bonds)
- Not energetically favourable
6
Q
What can non polar solvents dissolve in
A
Non polar substances
