CH121 Exp.#3 Reactions of Hydrocarbons-LAB Report PDF

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Student Name:Roshni Bhatt Section #:108 DATA TABLES Experiment #3 – Reactions of Hydrocarbons Data Table 1: Alkane Reactions Reagent

Results Colour

Br2 in CH2Cl2 (dark)

Br2 in CH2Cl2 (light)

Conc. H2SO4

“+” ve or “-“ve

Conclusion Expected OR Unexpected

(Reaction or no reaction)

Before

ORANGE

negative

Expected

No reaction

After

ORANGE

Negative

Expected

No reaction

Before

ORANGE

negative

Expected

No reaction

After

YELLOW

Postive

Expected

Reaction

Before

COLORLESS

negative

Expected

No reaction

After

COLORLESS

negative

Expected

No reaction

Data Table 2: Alkene Reactions Reagent

Results Colour

Br2 in CH2Cl2 Before

Conc. H2SO4

“+” ve or “-“ve

Conclusion Expected OR Unexpected

(Reaction or no reaction)

ORANGE

Negative

Expected

No reaction

After

YELLOW

positive

Unexpected

Reaction

Before

COLORLESS

Negative

Expected

No reaction

After

ORANGE

positive

Unexpected

Reaction

(BLACK) Data Table 3: Alkyne Reactions Reagent

Results Colour

Br2 in CH2Cl2 Before

Conc. H2SO4

“+” ve or “-“ve

Conclusion Expected OR Unexpected

(Reaction or no reaction)

ORANGE

Negative

Expected

No reaction

After

YELLOW

positive

Unexpected

Reaction

Before

COLORLESS

Negative

Expected

No reaction

After

ORANGE

positive

Unexpected

Reaction

(BLACK)

Data Table 4: Flammability of Aliphatic and Aromatic Hydrocarbons

Chemical

Combustion observations (based on provided material) It is highly flammable and explosive.

Hexane It is as flammable as hexane but didn’t have much flames Toluene

Data Table 5: Sulfonation of Aromatic Hydrocarbons Results before and after heating Layers

“+” ve or “-“ve

Expected OR Unexpected

Results after cooling Conclusion (Reaction or no reaction)

Before

TWO LAYERS

Positive

Expected

Reaction

After

NO LAYERS

Negative

expected

Reaction

(OILY PRODUCT)

Write a chemical equation for the production of toluenesulfonic acid.

A layer can be seen

Data Table 6: Nitration of Aromatic Hydrocarbons Results before cooling Layers NO LAYERS

“+” ve or “-“ve Positive

Expected OR Unexpected Expected

Conclusion

Results after cooling

(Reaction or no reaction) reaction

Write a chemical equation for the reaction of nitric acid and toluene.

Layers are formed and crystals settles down too

Data Table 7: Bromination of Aromatic Hydrocarbons –Test tube Results before and after water bath Colour

“+” ve or “-“ve

Expected OR Unexpected

Conclusion (Reaction or no reaction)

Before

ORANGE

negative

Expected

No reaction

After

LIGHT ORANGE

Positive

Expected

No reaction

+ WHITE FUMES

Data Table 8: Bromination of Aromatic Hydrocarbons –Beaker Results before and after exposure to light Colour Before

ORANGE

“+” ve or “-“ve

Expected OR Unexpected

Conclusion (Reaction or no reaction)

Negative

Expected

No reaction

Postive

Expected

Reaction

+ FUMES After

YELLOW/ COLORLESS + WHITE FUMES

Write a chemical equation for the reaction of bromine and toluene when iron and heat are used.

Write a chemical equation for the reaction of bromine and toluene in bright light.

References Libretexts. (2020, August 20). Chemical Reactions Overview. Retrieved December 05, 2020, from https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Modules_and_Websites_(Ino rganic_Chemistry)/Chemical_Reactions/Chemical_Reactions_Examples/Chemical_Reacti ons_Overview...