Reactions- L12 Flashcards
1
Q
Cr
A
2, 3, 4, 6
2
Q
Mn
A
2, 3, 4, 6, 7
3
Q
Fe
A
2, 3
4
Q
Co
A
2, 3
5
Q
Ni
A
2
6
Q
Cu
A
1, 2
7
Q
Zn
A
2
8
Q
Ag
A
1
9
Q
Au
A
1, 3
10
Q
Hg
A
1, 2
11
Q
Solutions
A
- a homogeneous mixture of a solvent and solute
- solvent- more and does the dissolving
- solute- less and gets dissolved
- Aqueous solution- solutions in which water is the solvent
12
Q
Electrolytic solutions
A
- An ionic compound dissolved in a polar solvent
- Has to have charged parts to dissolve
- most ionic compounds do this
- If a solution conducts electricity it must contain ions
- The more ions the solution contains, the better able it is to conduct electricity
13
Q
Draw representation of dissolved ionic compound
A
- Draw 2 circles with one element in each
- exaggerate relative sizes of the nucleus
- Include charges in those circles
- Draw water molecules around it with dipoles
- O= -
- H= +
14
Q
ions in water/conducting electricity
A
- smaller ions move slower since they attract and drag more water
- Larger ions move faster since they are less attracted to the water, greater shielding effect and coulombs law
15
Q
Molecular compounds in water
A
- molecular= no metals in it
- Non-electrolytes= most molecular compounds do not dissolve in water and therefor do not conduct electricity (sugar, methanol)
- Weak-electrolyes= weak acids- some dissociation (low conductivity), ex. acidic acid CH3COOH (aka ethanol acid or vinegar)
- Strong-electrolytes= strong acids- complete dissociation (high conductivity) ex. hydrochloric acid (HCl), HF, HNO3, H2SO4 (first H is strong, second is weak)
