02---->O. + O.
O2 + O. ----> O3

Cl2 ----> Cl. + Cl.
O3 + Cl. --->ClO. O2
ClO. + O3 ----> Cl. + 2O2

NO. + O3 ---> NO2. + O2
NO2. + O3 ----> NO. + 2O2

Hope that helps

Reply 985

VRS

Explain why the thermal stability increases with nitrates and carbonated down group 1 and 2

Also what are the trends we have to know for group 1,2,7 and across the period? Just trends

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(edited 11 years ago)

Reply 986

Arusa01

Original post by Exams v__v

I guess quite a bit of redox. ^^

Yeah probably and bloody titrations they love those q's.

Reply 987

Exams v__v

Original post by MissRiah12345

02---->O. + O.
O2 + O. ----> O3

Cl2 ----> Cl. + Cl.
O3 + Cl. --->ClO. O2
ClO. + O3 ----> Cl. + 2O2

NO. + O3 ---> NO2. + O2
NO2. + O3 ----> NO. + 2O2

Hope that helps

Thank you so much!! :biggrin:

Reply 988

Exams v__v

Original post by Arusa01

Yeah probably and bloody titrations they love those q's.

Haha, I quite love them too. :biggrin:

Section C is horrible.

Reply 989

MissRiah12345

How do you test for solubility?? Is there a test we need to know?? I know the trends, just is there a test??

Reply 990

im so fresh

Original post by Arusa01

Yeah probably and bloody titrations they love those q's.

ok princess. xD

Reply 991

Arusa01

Original post by im so fresh

ok princess. xD

HAA! Princess?

Reply 992

itsmehello

Original post by AmrinderRai

Its highly unlikely to come up but all you need to know is that the Hydrogen will go to the carbon that already has the most hydrogens (usually the end carbon).

Thankss, I don't remember much from unit 1:/

Original post by MissRiah12345

I think so. In one paper we had to recall minor and major from the addition of bromine to propene and we had to show the mechanism for the major product and draw the structural minor product :smile:

Oh great

Reply 993

Exams v__v

Original post by MissRiah12345

02---->O. + O.
O2 + O. ----> O3

Cl2 ----> Cl. + Cl.
O3 + Cl. --->ClO. O2
ClO. + O3 ----> Cl. + 2O2

NO. + O3 ---> NO2. + O2
NO2. + O3 ----> NO. + 2O2

Hope that helps

How is the nitrogen monoxide free radical first formed? Is there no equation for that?

Reply 994

The Doggfather

Which one is major and which is minor?

Reply 995

Chaofan88

Original post by verdikt

Does anyone know how to purify organic solvents? Please let me know!

Specimen paper, qn 27 has the diagram.

Thanks so much for this :smile:

Reply 996

MissRiah12345

Original post by Exams v__v

How is the nitrogen monoxide free radical first formed? Is there no equation for that?

I dont know tbh...I dont think we need to

Reply 997

blossomx

Could anyone briefly sum up how to tell if a molecule is polar or non-polar? Like is BF3 polar? What about NH3?

Reply 998

VRS

Original post by LeaX

Could anyone briefly sum up how to tell if a molecule is polar or non-polar? Like is BF3 polar? What about NH3?

Bf3 is non polar, but has polar bonds, the charges cancel out

Nh3 has a lone pair so in polar as charges do no cancel out and unsymmetrical distribution of charge

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