Chemistry: Post your doubts here!

[Rahma Abdelrahman]

For R-COCl it is the easiest as the carbon atom attached to Cl is Extremely +ve beascause of the polar C--O bond and C--CL bond, both Cl and O are highly electronegative elements
For RCL only one electronegative element and there are no other interactions with it

So R-COCl is easier to hydrolyse right?
Thanks.

 

[xXGTZXx]

So R-COCl is easier to hydrolyse right?
Thanks.

R-COCl > RCl > Ar-Cl

So yes your right

 

[AbbbbY]

It's official. I'm screwed. I have forgotten everything. The one subject I had hopes of getting an A* in now see's me trying to just reach to an A, and even that seems like a huge task. FML.

Good luck, everyone!

 

[chocolate_girl]

https://www.whatdotheyknow.com/request/195694/response/490695/attach/4/A Level Chemistry 9701 November 2013 Grade Thresholds PDF.pdf

Thanks

 

[Manobilly]

It's official. I'm screwed. I have forgotten everything. The one subject I had hopes of getting an A* in now see's me trying to just reach to an A, and even that seems like a huge task. FML.

Good luck, everyone!

you wont ,trust me you have that feeling before an exam and you do good in it .I have the same feeling too.

 

[Saad Sheikh]

hi, can any one tell me how to solve Q2/d/ii of 9701/42/0/n/09?
http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_w09_qp_42.pdf

 

[Saad Sheikh]

no 1?

 

[Farez]

hi, can any one tell me how to solve Q2/d/ii of 9701/42/0/n/09?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w09_qp_42.pdf

 

[Namehere]

It's official. I'm screwed. I have forgotten everything. The one subject I had hopes of getting an A* in now see's me trying to just reach to an A, and even that seems like a huge task. FML.

Good luck, everyone!

Do not worry! You are not alone ! Nah... just kidding, we will do fine! Usually the best chemists struggle the most, simply because they know the most!

 

[Saad Sheikh]

Thanks but i still i cant understand it completely. does it have anything to do with such a high kc value? meaning that most of it(Ag+) has formed a complex?

 

[Namehere]

Thanks but i still i cant understand it completely. does it have anything to do with such a high kc value? meaning that most of it(Ag+) has formed a complex?

You just assume that when you previously calculated the [Ag+], it is the same as the one you are using now. How else could you do it?

 

[Saad Sheikh]

You just assume that when you previously calculated the [Ag+], it is the same as the one you are using now. How else could you do it?

yeah...........but. oh ok then

 

[AbbbbY]

Do not worry! You are not alone ! Nah... just kidding, we will do fine! Usually the best chemists struggle the most, simply because they know the most!

The fact that my exam is in 2 hours or so and I don't know applications speaks volumes

 

[goodluckayesha]

In organic wht does Na2CO3 react with to produce CO2?

 

[thats_me]

Carboxylic acid

In organic wht does Na2CO3 react with to produce CO2?

 

[Champ101]

How did it go people??

 

[Aaquib Khalid]

n=(100/1.1)(0.3/9)
where n is the total number of Carbon atoms

Thank you mate, but what if instead of the relative heights something perhaps like abundance is given in percentage, how will the equation change to satisfy this scenario?
Thank you in advance

 

[AbbbbY]

Has to be the easiest P4 in ages. Easy P4, easy P2. The GT for this year will be sky high. Be prepared for shocking grades, ladies and gentlemen.

 

[Aaquib Khalid]

Has to be the easiest P4 in ages. Easy P4, easy P2. The GT for this year will be sky high. Be prepared for shocking grades, ladies and gentlemen.

You gave me hope and took it back within a second

 

[hela]

Has to be the easiest P4 in ages. Easy P4, easy P2. The GT for this year will be sky high. Be prepared for shocking grades, ladies and gentlemen.

Is this for variant 41 or 42

Really section B is easy