CHEMISTRY AS P33 PRACTICAL MAY 8 2014

[HooR Muhammad]

it was better than expected

 

[danial 234]

it was great but the very last part was a bit mess

 

[NaNinG]

the enthalpy calculations was kinda messed up
the rest was gud....

 

[ZeroNyx97]

for the enthalphy question, do you use Q = MC delta T for energy whats M ? mass of magnesium or the volume of solution ? i used the volume of solution ( 50 cm3) and whats ur enthalphy change?

 

[Arham 267]

Anybody knows in which solution were the chloride ions present?
And does anybody remember the observations and answer for the KMnO4 part?

 

[amaz arif]

Hey there! I wanted to ask that did we have to make a table for rough titration? Because i think it wasn't written there! Plus I didn't tick the titration value but did calculate my average instead! So my question is will I lose marks here? If yes, then how much?

 

[danial 234]

Anybody knows in which solution were the chloride ions present?
And does anybody remember the observations and answer for the KMnO4 part?

in fa4 were chloride
in kmno4
fa4 no reaction.. purple color
fa5 brown ppt
fa6 kmno4 was decolorised ... fa6 was oxidised

 

[danial 234]

for the enthalphy question, do you use Q = MC delta T for energy whats M ? mass of magnesium or the volume of solution ? i used the volume of solution ( 50 cm3) and whats ur enthalphy change?

use mass of solution.. 50 g

 

[SAtheXtreme]

for the enthalphy question, do you use Q = MC delta T for energy whats M ? mass of magnesium or the volume of solution ? i used the volume of solution ( 50 cm3) and whats ur enthalphy change?

Same here

 

[AnujaK]

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[maryam fatima]

for the enthalphy question, do you use Q = MC delta T for energy whats M ? mass of magnesium or the volume of solution ? i used the volume of solution ( 50 cm3) and whats ur enthalphy change?

yeah, we were supposed to take volume, i had the readings 400 and sth and 500 and sth...

 

[maryam fatima]

what cation was in FA6? chromium or ammonium? i did chromium bcoz there was no change in the colour of red litmus :-/ but all my friends said that it was ammonium :-(

 

[Fallen316]

what cation was in FA6? chromium or ammonium? i did chromium bcoz there was no change in the colour of red litmus :-/ but all my friends said that it was ammonium :-(

they had already mentioned in the question that one of the three solutions contained ammonium ion which was in FA6 however they asked specifically for METAL cations in the second last part, so my results were..
FA4 --> Fe3+
FA5 --> Mn2+
FA6 --> Fe2+.

 

[ZeroNyx97]

they had already mentioned in the question that one of the three solutions contained ammonium ion which was in FA6 however they asked specifically for METAL cations in the second last part, so my results were..
FA4 --> Fe3+
FA5 --> Mn2+
FA6 --> Fe2+.

same result

 

[Betharie Cendera A]

Luckily the exam was the same as my teacher taught but i messed up on salt analysis x_x. And also the calculations questions in the exam is harder than my teacher gave

 

[amaz arif]

Hey guys! What was the value of titre? I got 25.4 cm3

 

[Silverglitter]

which varient
plz answer !!!!

Paper 33.

 

[sahilkhan]

what about varient 34? anyone know about this varient?

 

[Silverglitter]

what about varient 34? anyone know about this varient?

People are more likely to reply if you make a separate thread for Paper 34 since it attracts all the Paper 34 crowd.

 

[Harsh Poddar]

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