Straight Chain (1 Viewer)

[Sy123]

It is said that the fact that Glucose polymerizes and alternates the glucose monomers so that the Cellulose is a polymer of alternating sides of glucose, apparently because of this it makes the chain straight?

Why is this so?

 

[Carrotsticks]

It is said that the fact that Glucose polymerizes and alternates the glucose monomers so that the Cellulose is a polymer of alternating sides of glucose, apparently because of this it makes the chain straight?

Why is this so?

Consider this:

BELOW: Amylose (alpha linkage: less stable, why we can digest starch etc easily)

BELOW: Cellulose (beta linkage: more stable, why it mostly comes out during defacation)

 

[Sy123]

Consider this:

BELOW: Amylose (alpha linkage: less stable, why we can digest starch etc easily)

BELOW: Cellulose (beta linkage: more stable, why it mostly comes out during defacation)

Oh ok, so its just common sense really :s

 

[someth1ng]

Well, the linkage causes it to "turn" a bit, when it goes up and down, it turns right, left, right, left and so on causing it to be straight. If it is only in one direction, there will be a "turning bias" causing it to bend and make different shapes like spirals.

 

[Sy123]

I don't want to make another thread for these small questions, so if a mod could please change the name into 'Small questions'

Another one is:

Why in the hydration of ethylene to produce ethanol, a hydrogen donor is needed? I can't see why this would be so, but its importance is mentioned.
What is it about the chemistry of the reaction that requires this catalyst?

 

[HeroicPandas]

BUMP

 

[HeroicPandas]

I don't want to make another thread for these small questions, so if a mod could please change the name into 'Small questions'

Another one is:

Why in the hydration of ethylene to produce ethanol, a hydrogen donor is needed? I can't see why this would be so, but its importance is mentioned.
What is it about the chemistry of the reaction that requires this catalyst?

BUMP

 

[Menomaths]

I don't want to make another thread for these small questions, so if a mod could please change the name into 'Small questions'

Another one is:

Why in the hydration of ethylene to produce ethanol, a hydrogen donor is needed? I can't see why this would be so, but its importance is mentioned.
What is it about the chemistry of the reaction that requires this catalyst?

Dilute H2SO4 is used to break up the double bond and allows water to attach. Water is not reactive enough to break the ethylene double bond.