Chemistry: Post your doubts here!

[♣♠ Magnanimous ♣♠]

I take a bath a cold bath before leaving home for exam refreshes me and then after coming back from exam i sleep for a long time
i dont have a biological clock

well i think you don't have studied further biology! i mean in detail so you don't know anything about it :/ .___.

 

[Metanoia]

the first alchool actually will be it is primary

Don't confuse able to be oxidised with able to be dehydrated.

If you remove the OH from the 1st alcohol , where would you be removing the H to form the double bond?

 

[ZaqZainab]

well i think you don't have studied further biology! i mean in detail so you don't know anything about it :/ .___.

I do -_- but well guess what maybe i am just special they say you need sleep you will do good
i do good without sleep You know naps are way better way to refresh you

 

[♣♠ Magnanimous ♣♠]

I do -_- but well guess what maybe i am just special they say you need sleep you will do good
i do good without sleep You know naps are way better way to refresh you

let me try one day

 

[ZaqZainab]

let me try one day

you mom will take 'jhoti' and tell you to go to bed
*JK* cause i have a friend who is not allowed to stay awake

 

[♣♠ Magnanimous ♣♠]

you mom will take 'jhoti' and tell you to go to bed
*JK* cause i have a friend who is not allowed to stay awake

lol.. hahahaha

 

[xXGTZXx]

An aqueous solution was prepared containing 1.0 mol of AgNO3 and 1.0 mol of FeSO4 in 1.00 dm3
of water. When equilibrium was established, there was 0.44 mol of Ag+
(aq) in the mixture.

Ag+(aq) + Fe2+(aq) Ag(s) + Fe3+(aq)

What is the numerical value of Kc?
A 0.35 B 0.62 C 1.62 D 2.89

the anw in the marking scheme is D, but when i solve it i get C(1.62)

 

[Metanoia]

An aqueous solution was prepared containing 1.0 mol of AgNO3 and 1.0 mol of FeSO4 in 1.00 dm3
of water. When equilibrium was established, there was 0.44 mol of Ag+
(aq) in the mixture.

Ag+(aq) + Fe2+(aq) Ag(s) + Fe3+(aq)

What is the numerical value of Kc?
A 0.35 B 0.62 C 1.62 D 2.89

the anw in the marking scheme is D, but when i solve it i get C(1.62)

Did you happen to include "Ag solid" in the Kc?

 

[ZaqZainab]

An aqueous solution was prepared containing 1.0 mol of AgNO3 and 1.0 mol of FeSO4 in 1.00 dm3
of water. When equilibrium was established, there was 0.44 mol of Ag+
(aq) in the mixture.

Ag+(aq) + Fe2+(aq) Ag(s) + Fe3+(aq)

What is the numerical value of Kc?
A 0.35 B 0.62 C 1.62 D 2.89

the anw in the marking scheme is D, but when i solve it i get C(1.62)

In Kc we do not take the concentration of the solid. So in this case we will not include the concentration of Ag(s)
So it will be as follows:
Kc= (0.56) / (0.44^2)
= 2.89
That's option D

 

[xXGTZXx]

Did you happen to include "Ag solid" in the Kc?

i feel dumb now

 

[GCE As and a level]

Don't confuse able to be oxidised with able to be dehydrated.

If you remove the OH from the 1st alcohol , where would you be removing the H to form the double bond?

Sir,Will u be available for these 2 hours??
Or tom morning u will be available??
Srry for bothering

 

[Duaa Akhtar]

does 2chlorobutane react with hydrogen cynide???

 

[Metanoia]

I'll be here for at most 15 min more.

Tomorrow is working day, so don't think I can do much before your paper. You can try to post tomorrow, but I can't guarantee I'll reply in time.

 

[ahmed faraz]

Which Entalhpy Changes could be positive and Negative?

 

[Metanoia]

does 2chlorobutane react with hydrogen cynide???

CN- , yes.

HCN, no.

 

[Metanoia]

Which Entalhpy Changes could be positive and Negative?

Is this MCQ?

Perhaps heat of solution.

 

[ahmed faraz]

Is this MCQ?

Perhaps heat of solution.

Can Formation Be Positive and Negative?

 

[_Ahmad]

http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_s11_qp_11.pdf

Q16(D),26(D)

 

[ashcull14]

 

[ahmed faraz]

And Can Sulphur Oxide be Present in Cars? They Sometimes Give X is present and Oxidizes In Atmosphere?
Could You Tell Which Oxides Could OxidiseIN AIR? THnx