Solution Conductivity
Today we did a lab about the conductivity of many solutions, including water. We learned that distilled water by itself is not conductive, but tap water is conductive due to the many additional minerals that it contains.
Electrical conduction in solutions requires charged ions to be present.
Ionic solutions dissociate (break apart) when placed in water. Molecular solutions seldom split into ions
The following is the dissociation of Ce2(SO4)3:
Ce2(SO4)3 -> 2 Ce 3+ (aq) + 3 SO4 2+
If the compound is covalent, it will dissociate just into an aqueous version of itself.
We were given a tree to follow to determine conductivity:
Is it a metal?
If yes, then it is CONDUCTIVE. but if no then ask:
Is it a solid non-metal?
If yes, then it is NON-CONDUCTIVE. If no, then ask:
Is it an acid or base?
If yes, than it is CONDICTIVE, if no then ask:
Is it ionic?
If yes, then it is CONDUCTIVE, if no then it is not.
Electrical conduction in solutions requires charged ions to be present.
Ionic solutions dissociate (break apart) when placed in water. Molecular solutions seldom split into ions
The following is the dissociation of Ce2(SO4)3:
Ce2(SO4)3 -> 2 Ce 3+ (aq) + 3 SO4 2+
If the compound is covalent, it will dissociate just into an aqueous version of itself.
We were given a tree to follow to determine conductivity:
Is it a metal?
If yes, then it is CONDUCTIVE. but if no then ask:
Is it a solid non-metal?
If yes, then it is NON-CONDUCTIVE. If no, then ask:
Is it an acid or base?
If yes, than it is CONDICTIVE, if no then ask:
Is it ionic?
If yes, then it is CONDUCTIVE, if no then it is not.
Here is a video about the conductivity of solutions
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