Practical de quimica Structure and Bonding

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Juan Felipe Jaramillo Castillo

Structure and Bonding Practical

Hypothesis:

Part 1: Solubility of the solids:

In my opinion calcium chloride will be soluble in water but it would not be dissolved in nothing else. In the case of graphite because it is a lubricant an act as oil I think it would dissolve in any of the substances tested but in the case of iodine I think it will dissolve in hexane.

 

Part 2: Conductivity:

I think that compounds like calcium chloride (dissolved in water) will conduct electricity as dissolved salt do. Graphite will conduct alone as it is used as conductor for electrolysis, while Iodine as it is a halogen, it will not conduct.

Part 3: Miscibility of liquids  

What is going to happen is that none of the alcohols with water will mix but in the case of hexane and ethanol as both are similar and are organic compounds they will be miscible when mixed each other.

Part 4: Melting point of the solids:  

As iodine is a perfect example to show sublimation I think that it will have the lowest melting point. As it is very hard and very strong bonding the graphite will have the highest melting point while calcium chloride will be in the middle.

Part 5: Polarity of the liquids:

As water conducts electricity, it should have some type of charge that will make it polar. In the case of the two organic compounds I don’t think they are polar because they don’t conduct electricity

Results:

Part 1: Solubility in liquids

Solutes with Water

 

Solutes with Ethanol

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Solutes with Hexane                                        

   

Part 2:  Conductivity of the substances

Part 3: The liquids water, ethanol and hexane were mixed each other in all the possible combinations. Only one homogeneous and colourless mixture was found combining water and ethanol. No miscible solution was formed and in every other test done, two clearly visible colourless layers were formed.

Part 4: The ...

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