Alkene reaction Flashcards
1
Q
what happen at Alkene adition reaction
A
double bond breaks
2
Q
what happen if alkene react with hydrogen
A
form alkane
3
Q
what happen if alkene react with steam
A
form alcohol (ethanol)
4
Q
condition for alkene to react with hydrogen
A
occur at 150oC using a nickel catalyst
5
Q
condition for alkene react with steam
A
occur at 300oC + 60 atm using a phosphoric acid
6
Q
how is alkene made from cracking
A
made by cracking of alkanes
7
Q
what is cracking mean
A
thermal decomposition
8
Q
what to expect in cracking for alkene
A
heating the hydrocarbon molecules to around 600 - 700oC
-> using hot powdered catalyst of **alumina or silica **
9
Q
what is always produced in cracking
A
alkenes
hydrogen
alkanes
