[su11]

Hi
how to convert double and triple bond to single bond?

[discodermolide]

Hi
how to convert double and triple bond to single bond?

Draw one line instead of two or three respectively between the carbon atoms!
Have you no ideas?

[Fluorine]

(ethyne) HC≡CH ---> H₃C-CH₃ (ethane)

Is something being added or removed, and what?
Is this reduction or oxidation?

Try to answers these, if you still confused you'll be helped.

[puneet]

 This is an example of reduction of Alkene or alkyne to alkane...
In such type of reactions, Hydrogen molecule is added across the double bonds ...
It can be achieved by reacting the alkene or alkyne to Hydrogen gas in presence of some metal catalyst...like Pt,Pd,Ni etc..


   

[su11]

Thanks for your replies
but I meant when the E-Z system find in molecules

[Arkcon]

Thanks for your replies
but I meant when the E-Z system find in molecules

Oh, you mean E-Z notation for geometric isomerism, and not a chemical reaction to alter a chemical.  In that case, your first response was correct.  Good work there, discodermolide:

http://www.chemguide.co.uk/basicorg/isomerism/ez.html