Outcome 2- Organic Chemistry Flashcards Preview

Unit 1 Chem > Outcome 2- Organic Chemistry > Flashcards

Flashcards in Outcome 2- Organic Chemistry Deck (23):
1

Consider the sequence of C2H2, C2H4 and C2H6 Only ..... increases

Length

2

2-methylpropan2-ol is an isomer of

Butan-2-ol

3

The formation and compostion of crude oil

Millions of years ago the dinosaurs died out and became apart of the earth as fossils. Through High pressure and temp over the years the fossil turned into fossil fuels ask crude oil. the crude oil is then put into disslation towers to be made into alkanes upto 70 carbon atoms

4

Why is franctionalling performed in the absence of air

Because oxygen will create a combustion reaction and thus burn the towers down

5

Naming Organic Molecules

- Identify Longest carbon chain
- Number carbons in the main chain, starting from the ennd to closet the 1) functional group, b)Double Bond, c)akyl branch
-Name the side branches/ functional groups and indicate thier postion

6

Functional Group

Alcohol , -OH . -Ol

7

Carboxylic acids

-COOH. -oic acid

8

Ester

-COOCH3- (Naming. Alcohol first then Carboxlyic) . ..yl ..Anoate + H2o

9

Alkanes

Saturated (Single bonds)

10

Alkenes

Unsaturated (Double bonds)

11

Alkynes

Unsaturated (Triple Bonds)

12

Propane isomer is always going to be

Dimethyl Propane

13

isomers

can not have double bond if original hyrdrocarbon was a alkane

14

Physical and chemical properties of: Carboxylic Acids

Has a strong Odour, High Boiling points and solubility in smaller carboxylic acids

15

Physical and chemical properties of: Esters

Esters have polar bonds but do not engage in hydrogen bonding and are therefore intermediate in boiling points between the non polar alkanes and the alcohols, which engage in hydrogen bonding.

16

Substitution Reaction

Where one or more of the chlorine or fluroine atoms take the place of one or more hydrogen atoms. eg

CH4+ Cl2 -----> (uv light) CH3CL + HCL

17

Addition Reaction

Alkenes reacting with hydrogen or halogens. the hydrogen or halogen attaches the double bond and breaks it. eg

C2H4+ Cl2 ------> (Catalyst) C2H4Cl2

18

Combustion Reaction

Hydrocarbon+ o2 -> H20 + Co2

19

Condensation/ Esterification

Concentrated sulfuric acid (H2So4) is used to link the alcohol and carboxylic acid together by removing a water molecule.

20

Cracking

Breaking down larger hydrocarbons into smaller ones. can be done at high temp (Thermal cracking) or low temp with a catalyst (Catalytic Cracking)

21

Different molecular shapes of covalent compounds

Tetrahedral, Prymadial, V-shapes, linear, Planar,

22

Black Oxide of Copper was reduced to copper in a stream of hydrogen. Why was the stream of hydrogen maintained untill the appartus cooled?

So that the oxygen cannot enter the tube and re-oxidise the copper

23

The main change that would be observed inside the tube as it was heated

Solid changes from black to orange brown