Lab 10.1: Solvents (Like Disolves Like)

1. Salt and sugar are definitely polar because they have a strong attraction to the polar water(like dissolve like).The samples with the other solvents are non polar and since the polarity is unalike they do not dissolve in the solution.
2. Vegetable oil is definitely non polar because they have a strong attraction to the non polar hexane(like dissolve like).The samples with the other solvents are polar and since the polarity is unalike they do not dissolve in the solution.
3. Ethanol has a polar and non polar end since it only can slight dissolve both non polar and polar solutes.
4. Ethanol could dissolve in both water and hexane since it has a polar and non polar side of the molecule it allows it to dissolve with polar water and the non polar side of hexane. This makes the solution slightly soluble as only one side of the molecule can be dissolved with like side of the molecules polarity matching the solvent.
5.  

	Type of Molecule	Solubility in Water	Solubility in Hexane
NH3	Polar	Soluble	Insoluble
I2	Non polar	Insoluble	Soluble
HCl	Non polar	Insoluble	Soluble

• 6. Ionic materials dissolve well in water because they are both polar. Hexane is non polar, solutes dissolve in other solvents of the same polarity as themselves.

Enrichment:

Nitrogen, oxygen, and carbon monoxide are all non polar so they do not dissolve in the polar water, like dissolve like. Oxygen is produced for fish by the plants who use carbon and carbon dioxide is stored in water these ions are an important part of natural buffers that prevent the water from becoming too acidic or too basic for aquatic life to live it.