If an unknwn substance acts polar experimentally dissolved i

If an unknwn substance acts polar experimentally (dissolved in water) it could be ionic or covalent. Determine 5 additional experimental tests you could use to distinguish between these two possibilities. (remember that you don\'t know the structure of the substance). write up a general lab procedure for each in detail using these tests to figure out whether the unknown is ionic or covalent.

Solution

1. Dissolve in xylene: polar covalent may be partially soluble but ionic is insoluble.

2. Melting point: ionic solid have high melting point but covalent have low.

3. Boiling point: ionic solids have high boiling point but covalent solids have low.

4. Conductivity: ionic soild in aqueous solution conduct electricity but covalent solids donot.