Paper 5 Tips !! :)

[xhizors]

??

Hey xhizors could you upload your table please?

 

[knowitall10]

I'm sorry xhizors the internet was playin arnd gettin me pissed :/ Finally, here, my solubility table.. and yeah, i like ur idea of discussing papers
Jazak Allahu Khair brother

 

[xhizors]

ok now the plan part
anyone would like to share their plan??

 

[xhizors]

just a small summary!

 

[MaxStudentALevel]

Hey guys I'm sort of freaking out.
What are the requirements for the tables they ask us to draw on our own???!?
-Just headings right??? No actual calculation of values???? Oh God.

 

[knowitall10]

ok now the plan part
anyone would like to share their plan??

Should i upload a photo.. or type it?

 

[xhizors]

I'm sorry xhizors the internet was playin arnd gettin me pissed :/ Finally, here, my solubility table.. and yeah, i like ur idea of discussing papers
Jazak Allahu Khair brother

y u took the mass of solution u have to divide it with mass of water( and u did state in the formula mass of water in solution not the mass of solution)
solution even includes the mass of solid with mass of water

 

[FRENZYAMU]

Enthalpy Change of Solution(Use Calorimeter)

-Pour Water 50cm3 in Plastic cup
-stir a little and measure its temperature (remem 0.2 graduations) its initial temp
-cautiously take NaOH as it is corrosive (use hand gloves as it can react with a moisture in your hand) measure 30cm3 of Naoh using measuring cylinder
-pour alkali in plastic cup stir it with thermometer and record the highest temperature

Thats it no more Rocket science
use equation Q=mc4T => 80gx4.2x(65-30)
here u get the Enthalpy change of Solution

Pray for me that i get able to make my way toward a World Distinction Inshallah!!

Question : might sound stupid but does mixing 30g of NaOH and 50g of H20 make up the mass of solution to 80g because doesnt molecules like dissolve in it nd do not really increase vol of water ? i knw stupid, but its really bugging me

 

[knowitall10]

y u took the mass of solution u have to divide it with mass of water( and u did state in the formula mass of water in solution not the mass of solution)
solution even includes the mass of solid with mass of water

mass of water in a saturated solution

 

[AdeelRox]

http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_w12_ms_53.pdf
how to calculate the calculated density of the solution in question 3 part (a)

 

[Silent Hunter]

How to do 3(d) of the same paper?

 

[xhizors]

ok so no plan yet
here's what i did
n12 p53 Q1b pls sort out if u find any prob
- I first consider 2.1 and wrote its mols ratio
and drive 1mol of cuco3 will give 1/4th mol of oxy with 1co2 so 1 mol will give a total of 30 dm3
-then considered 2.2 simple mole ratio 1:1 so only 24dm3 would be collected
- i took 100cm3 mcylinder if considering 2.1 so mass required for cuco3 is 0.412
and for 2.2 0.515
by unitry method
- to confirm decomposition u repeat until constant vol is achieved!
so in conclusion gass collected and mol ratio can help us to determine whic decomposition is taking place

 

[xhizors]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w12_ms_53.pdf
how to calculate the calculated density of the solution in question 3 part (a)

density= total mass(100)/volume

 

[Ash1994]

it takes ALOT of time for me to figure out the scale is there any easy way of doin it?
p.s Ive always had problems in graphs =/

 

[knowitall10]

ok so no plan yet
here's what i did
n12 p53 Q1b pls sort out if u find any prob
- I first consider 2.1 and wrote its mols ratio
and drive 1mol of cuco3 will give 1/4th mol of oxy with 1co2 so 1 mol will give a total of 30 dm3
-then considered 2.2 simple mole ratio 1:1 so only 24dm3 would be collected
- i took 100cm3 mcylinder if considering 2.1 so mass required for cuco3 is 0.412
and for 2.2 0.515
by unitry method
- to confirm decomposition u repeat until constant vol is achieved!
so in conclusion gass collected and mol ratio can help us to determine whic decomposition is taking place

xhizors I asked whether or not i should upload a photo

 

[xhizors]

mass of water in a saturated solution

same yaar, solution mai pani bhi hota hai and what u calculated is all the saturated solution(solid + water) mass

 

[xhizors]

it takes ALOT of time for me to figure out the scale is there any easy way of doin it?
p.s Ive always had problems in graphs =/

do practice of scaling atleast 5 times

 

[xhizors]

xhizors I asked whether or not i should upload a photo

upload photo that would be a great help for me

 

[iKhaled]

it takes ALOT of time for me to figure out the scale is there any easy way of doin it?
p.s Ive always had problems in graphs =/

always make scales that r divisible by 2,4 and 5 dont make awkward scales like 3, 7 , 11 etc on each large square no keep it neat like 2, 4, 6 etc on each large square

 

[knowitall10]

Anyway, here's my answer.
thst's exactly what i did