CHEMISTRY PRACTICAL MAY 2010

[Deceit1991]

Na2Co3 NahCo3 for energetics
and salts are ferrousammonium sulphate
ammoniumsulpahte
sodium sulphate
organic tests involve glucose and butonone
one is aldeyhde and other i keytone using 2 4 Dinitro


fb1 sodium hydrocrabonate 1.9-2.1 g
fb2 hydrogen carbonate 3.9-4.1 g
fb3 sodiumhydrogencarbonate 5.9-6.1 g
fb4 hcl 3mol /dm3
fb7 0.1 mol/dm3 ammonium iron (2) sulphate
fb8 0.2mol/dm3 ammonium chloride
fb9 50 percent solution of butanone
fb 10 0.1 mol/dm3 sodium sulfite
fb 11 0.1 mol/dm3 sodium sulfite
fb 12 0.5mol/dm3 glucose solution

that all i know.. enjoy

 

[Buffer Solution]

THANKS!!!

 

[obr***]

thnk u SOOOOOoooo mch
btw hw do u no all ds??
and is it valid???

 

[sana_92]

hey did u know da confidential or wht???

 

[azeem22]

is Na2Co3 involved???? or its NaHCO3???

 

[puzzles92]

HCL 3 mol/dm3 , are they out of thier mind, That can be very dangerous, And will the %impurity be in the enthalpy question or in the salt analysis one

 

[puzzles92]

HCL 3 mol/dm3 , are they out of thier mind, That can be very dangerous, And will the %impurity be in the enthalpy question or in the salt analysis one

 

[apple]

HCL 3 mol/dm3 , are they out of thier mind, That can be very dangerous, And will the %impurity be in the enthalpy question or in the salt analysis one

Haha dude. That's nothing. When I sat for paper 34 last year (June)...we had to use 10 mol/dm^3 HCL! We were given rubber gloves and goggles to wear. I didn't bother with that. lol.

 

[Deceit1991]

Confirm.but there will be changes because the British council people are not blind they know that paper leaks.there will be slight changes
same happened with physic practical p3 33
they said milliammeter and thermometer will be used in the circuit and according to some ppl group A had the milli ammeter
and group B had the simple ammeter. anda the thermometer was never used.

 

[azeem22]

is Na2Co3 involved???? or its NaHCO3???

 

[Deceit1991]

both 4got to mention nahco3

 

[TheOne.]

Confirm.but there will be changes because the British council people are not blind they know that paper leaks.there will be slight changes
same happened with physic practical p3 33
they said milliammeter and thermometer will be used in the circuit and according to some ppl group A had the milli ammeter
and group B had the simple ammeter. anda the thermometer was never used.

wait, how sure are you about this?? cause someone else on another topic said :

fb 7- ferrousammoniumsulfate
fb 8 - ammonium chloride
fb 9 - butanone
fb 10 - sodium sulfite
fb 11 - sodium sulfite
fb 12 - Glucose D
fb 1 - Sodium bicarbonate
fb 2 - #
fb 3 - #
fb 4 - 3 mol HCL

Cations and Anions include : fe2+ , NH4+ , So4-2 , So3-2

this is so confusing... couldnt people just tell the exact paper and get it done with =(

 

[Supergirl]

Whats the test for glucose and butanone?

 

[ashhadazam]

Well only these 2 will answer 2-4Dnph to giv orange crystals..
Glucose will answer tollens while butoanone wont

 

[ashhadazam]

Well thanks man .. If ur soursce is authentic -.-

 

[cuntizm]

kasto muji gedi raicha obr*** .. pako bela muji chupa lagera sarnu ni.. k muji bhalu jasto 'is it valid??' bhandai barbaraairaho.. esta besya// /

 

[vux]

Na2Co3 NahCo3 for energetics
and salts are ferrousammonium sulphate
ammoniumsulpahte
sodium sulphate
organic tests involve glucose and butonone
one is aldeyhde and other i keytone using 2 4 Dinitro


fb1 sodium hydrocrabonate 1.9-2.1 g
fb2 hydrogen carbonate 3.9-4.1 g
fb3 sodiumhydrogencarbonate 5.9-6.1 g
fb4 hcl 3mol /dm3
fb7 0.1 mol/dm3 ammonium iron (2) sulphate
fb8 0.2mol/dm3 ammonium chloride
fb9 50 percent solution of butanone
fb 10 0.1 mol/dm3 sodium sulfite
fb 11 0.1 mol/dm3 sodium sulfite
fb 12 0.5mol/dm3 glucose solution

that all i know.. enjoy

whats the diff between fb1 and fb3
oh and fb10 and fb11 are similar.
btw i think the enthalpy change is very much like this one http://www.funqa.com/chemistry/3404-chemistry-2.html
cos they provided the Na2CO3, NaHCO3 and conc HCl

 

[vux]

can anyone give us a rough idea of how the glucose butanone question will be like? never done any practicals requiring those.
also what are we supposd to do with the ferrous ammoniumsulphate? find its percentage purity or smthing?