Chemistry paper 3 Discussionnnnn

[Othman]

When drawing starch it should be like this ?
HO-[ C chain ]- O-[ C chain ] -O- [ C chain ] -OH
or with the OHs ?

 

[mamaeezi ologeh]

hw ar eu so sure?

this paper will be difficult and no matter how good you are in chemistry it will be a bit of a challenge. may God help us all

 

[mamaeezi ologeh]

N

When drawing starch it should be like this ?
HO-[ C chain ]- O-[ C chain ] -O- [ C chain ] -OH
or with the OHs ?

NO starch is -O-O-O-

 

[Mariam_33]

When drawing starch it should be like this ?
HO-[ C chain ]- O-[ C chain ] -O- [ C chain ] -OH
or with the OHs ?

Strach chain is like this:
(--O--[BOX]--O--[BOX]--O--)n
Where O is oxygen

 

[Bloodserpent]

I am just going to bullshit at my paper like I always do and hope to get an A or above.. it worked at school except in maths.. maths has rules to be followed :|.

 

[Othman]

Strach chain is like this:
(--O--[BOX]--O--[BOX]--O--)n
Where O is oxygen

and

N
NO starch is -O-O-O-

Yes but like in maltose;
HO-[Cchain]-O-[cchain]-OH is it the same thing ? when drawing starch or should I just leave the ends open ?

 

[Iridescent]

and


Yes but like in maltose;
HO-[Cchain]-O-[cchain]-OH is it the same thing ? when drawing starch or should I just leave the ends open ?

Leave the ends open for all the polymers because they are unsaturated. More and more atoms can be added to them.

 

[JBawazir]

when they say the solution is aques....is it conctrated or dilute? like how do we know?

if they dont mention then its concentrated

 

[Iridescent]

when they say the solution is aques....is it conctrated or dilute? like how do we know?

If they only mention aqueous, it means dilute aqueous. Otherwise, they write concentrated aqueous.

 

[walkanwine]

everyone here seems to pretty much have everything under control for tomorrow.

 

[Lesley anne]

Lool I really hate polymers. That topic always brings me down. Hoping for the best tho

 

[Nbl_Amd]

Inshallah It will go will
Keep your Efforts Full and everything will go alright!

 

[Othman]

I have a question;
If we put KMnO4 + KI = What color ?

 

[omaaaar]

KI which is colour less will turn brown

 

[yamaner]

guys how to find the excess in sticom??

 

[Iridescent]

guys how to find the excess in sticom??

From the mass of the reactants given, and the mole ratio, find how much of the other substance is needed to react completely with the amount of the first substance given. If the mass of the second substance is more than needed, it is in excess. Otherwise, the first substance is in excess.

 

[Omar Haider]

Thank you.

No problem! Hope you did well today

 

[omaaaar]

P31 was quite easy