Which of the ffg would give lilac flame colouration and a white precipitate with acidified barium chloride solution.
A)kcl B)NaNo3 C)K2So4 D)Caso4

felix00:
. I don't get.... Does for a 'long period of time' means so2 is in excess.... I think it means d final product.
Let me give u an example.... Like uhmm ethanol is passed into k2cr2o7 for a long period of time... Does dat means ethanol is in excess.. I don't think so

What happens when you pass CO2 into lime water?
You get a white ppt CaCO3
If you keep passing CO2 (excess) the milkiness dissappears due to the formation of CaHCO3.

felix00:
Which of the ffg would give lilac flame colouration and a white precipitate with acidified barium chloride solution.
A)kcl B)NaNo3 C)K2So4 D)Caso4

C- K2SO4
Lilac flame = K cation
White ppt with BaCL2 = SO4 anion

Optimist1998:

What happens when you pass CO2 into lime water?
You get a white ppt CaCO3
If you keep passing CO2 (excess) the milkiness dissappears due to the formation of CaHCO3.

.
If u keep passing it into NaoH I think u are ryt.... But if u pass a certain amount and leave it in d sol den am ryt

Optimist1998:
C- K2SO4 Lilac flame = K cation White ppt with BaCL2 = SO4 anion

Correct

Am confused here
A blue solid,T which weighed 5.0g was placed on a table. After 8 hrs, the resulting pink solid was found to weigh 5.5g. It can be inferred dat substance T
A) is deliauescent B) is hygroscopic C)efflorescent
Last opt is nt important

felix00:
Am confused here
A blue solid,T which weighed 5.0g was placed on a table. After 8 hrs, the resulting pink solid was found to weigh 5.5g. It can be inferred dat substance T
A) is deliauescent B) is hygroscopic C)efflorescent
Last opt is nt important

It is deliquescent but series picked hygroscopic and a
I am confused
Generally because all deliquescent are hygroscopic but not all hygroscopic are deliquescent

Isaolamide:


It is deliquescent but series picked hygroscopic and a
I am confused
Generally because all deliquescent are hygroscopic but not all hygroscopic are deliquescent

its hygroscopic cus its still solid and didn't turn to liquid

@optimist1998... you've registered ryt? which school did you finally go for?

Donpre:
@optimist1998... you've registered ryt? which school did you finally go for?

UNN but it's still likely to change after jamb..
Depends on my performance.

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Optimist1998:
UNN but it's still likely to change after jamb..
Depends on my performance.

.
What are u aiming for as in what score.... I saw a certain score in my dream(lol) and have been obsessing about it since then

felix00:
.
What are u aiming for as in what score.... I saw a certain score in my dream(lol) and have been obsessing about it since then

340 all things being equal

Optimist1998:
340 all things being equal

I only hope we won't be marked down this year. And for Jamb to announce 250 put you on merit I'm still curious.

SamanN:

I only hope we won't be marked down this year. And for Jamb to announce 250 put you on merit I'm still curious .

Last year was a disaster, I really do hope this year's marking is different.

@ bold I thought that was a rumour, how true is it?

Optimist1998:
Last year was a disaster, I really do hope this year's marking is different.

@ bold I thought that was a rumour, how true is it?

It was jex a rumor...it was nt official.

Optimist1998:
340 all things being equal

just curiou.... wat did u score last yr

Optimist1998:
340 all things being equal

just curious.... wat did u score last yr

felix00:

just curious.... wat did u score last yr

282

Optimist1998:
282

cool..... wat school

felix00:

cool..... wat school

UI

Optimist1998:
UI

crappy sch.... never really liked dat place

felix00:

crappy sch.... never really liked dat place

:
lol

felix00:

crappy sch.... never really liked dat place

I was in love with the school...

Optimist1998:
I was in love with the school...

good for u it is 'was'

felix00:

good for u it is 'was'

Hehe why the hate?

Optimist1998:
Hehe why the hate?

are they not d one dat deny a guy with over 300 admission last year.... besides dat I know a guy who has been denied admission twice but still goes ahead and choose d place again.. who does dat?

felix00:

are they not d one dat deny a guy with over 300 admission last year.... besides dat I know a guy who has been denied admission twice but still goes ahead and choose d place again.. who does dat?

I don't think any school is innocent in Nigeria, it happens everywhere but 300 and still no admission....talk about corruption

Optimist1998:
I don't think any school is innocent in Nigeria, it happens everywhere but 300 and still no admission....talk about corruption

Oya enough talk... Post questions here let me flex my head

Which of the following statements is correct about sodium chloride in the solid state?
A. it exists as aggregates of ions
B. it conducts electricity
C. its melting point is below 100oC
D. it exists as discrete molecules
E. its ions are linked by metallic bonds

Which of the following reactions is not feasible?
A. Cl2 + 2Kl → 2KCI + I2
B. Cl2 + 2NaF → 2NaCI + F2
C. Zn + CuCI2 ZnCl2 + Cu
D. Zn + 2AgNO3 → Zn(NO3)2 + 2Ag