Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
16 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
What is hydrocarbon? |
Organic molecules with C and H chemically combined |
|
|
|
What do the following represent? - Meth- - Eth- - Prop- - But- - Pent- - Hex- - Hect- - Oct- |
-1 C (carbon) -2 C -3 C -4 C -5 C -6 C -7 C -8 C |
|
|
|
What are alkanes? |
Saturated hydrocarbons, contain only single bonds |
|
|
|
What is Alkene? |
Non saturated hydrocarbons, contains one (C=C) Carbon Carbon double bond |
|
|
|
What is formula for combustion for Alkane? |
Alkane + O² -> CO² + H²O |
|
|
|
What happens during incomplete combustion? |
Carbon monoxide will be produced |
|
|
|
What is the reaction of Alkane with Halogen called? What is the condition? |
Substitution reaction. *needs excess halogen* For Chloride, needs UV light |
|
|
|
How are alkenes prepared? What are the conditions? |
Through cracking. Requires: -high temperature -Aluminium oxide/ Silicon dioxide as catalyst |
|
|
|
What is the formula for combustion for alkene? What happens during incomplete combustion? |
Alkene + O² -> CO² + H²O
Carbon monoxide is produced instead of Carbon dioxide. |
Combustion is the burning of oxygen |
|
|
What is the reaction of Alkene with Halogen called? What are the conditions? |
Addition reaction. For Bromine, in a dark room |
|
|
|
What are the conditions for catalytic hydrogenation? And what does it do? |
-200° C -Nickel as catalyst From Alkene to Alkane Alkene + H² -> Alkane |
|
|
|
What is the test to differentiate Alkane and Alkene? |
Bromine test. [Bubble aqueous Bromine into two separate solutions containing alkane and alkene in a dark room] |
|
|
|
What is observed when bromine + alkane? |
Solution remains Reddish brown |
|
|
|
What is observed when bromine + alkene? |
Solution turns from reddish brown to colourless |
|
|
|
What is the purpose of cracking? |
To obtain smaller and more useful chains of hydrocarbons from larger ones |
|
|
|
What are the conditions for cracking? |
High temperature SiO³ or Al²O³ as catalyst |
|
