Chemo P5 tips

[Ayaaa]

oooh haha!

 

[angelgirl:)]

oooh haha!

 

[vaibhavnatarajan]

http://www.xtremepapers.com/papers/... AS Level/Chemistry (9701)/9701_s11_qp_51.pdf

For question 1, why should a water bath not be used??

 

[angelgirl:)]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s11_qp_51.pdf

For question 1, why should a water bath not be used??

how come u use waterbath for decompostion of metal carbonate...u have to haet it strongly ...to break the bonds...

 

[namename]

how you would mix the reactants without loss of gas from the apparatus?

Can you illustrate this in diagram??

 

[rockerzregmi]

9701/05/m/j07 question 2a b ) can any one explain what vs what graph we should plot and what can we obtain from the gradient .. Those who can answer my question you are really my life savier

 

[angelgirl:)]

9701/05/m/j07 question 2a b ) can any one explain what vs what graph we should plot and what can we obtain from the gradient .. Those who can answer my question you are really my life savier

mass of Cl- vs mass of Hg...2:1 ratio..means its HgCL2..

 

[vaibhavnatarajan]

how come u use waterbath for decompostion of metal carbonate...u have to haet it strongly ...to break the bonds...

So where do we use a water bath?

 

[angelgirl:)]

So where do we use a water bath?

WATER BATH is used wen u want to keep the temp.. constant through out the reaction or u want to carryout the exp...with different range of temp...for a pariculer temp. to keep it constant u hav to use a water bath...eg wen u r carring out solubility...

 

[angelgirl:)]

WATER BATH is used wen u want to keep the temp.. constant through out the reaction or u want to carryout the exp...with different range of temp...for a pariculer temp. to keep it constant u hav to use a water bath...eg wen u r carring out solubility...

hmmm i no ..i couldnt explain u well...but hope u got some idea about it...

 

[Asha Tabassum]

how to find the conc. of succinic acid on both the layers....???
O/N 2011 P 53 que no. 2

 

[angelgirl:)]

how to find the conc. of succinic acid on both the layers....???
O/N 2011 P 53 que no. 2

i guess u postet rong year or varient...

 

[Asha Tabassum]

i guess u postet rong year or varient...

awww sorry.... its 2010

 

[Asha Tabassum]

how to find the conc. of succinic acid on both the layers....???
O/N 2010 P 53 que no. 2

 

[angelgirl:)]

how to find the conc. of succinic acid on both the layers....???
O/N 2010 P 53 que no. 2

conc..of succecic acid in water=0.1*B/10
conc.............................in ether=0.02*C/25

 

[angelgirl:)]

conc..of succecic acid in water=0.1*B/10
conc.............................in ether=0.02*C/25

n=c*v
c=n/v
c=c*v/v
c=0.1*24.3/10=0.243...for the first 1

 

[saudha]

can some one tell how to prepare 250cm of 0.1 of aqueous lead nitrate

 

[angelgirl:)]

can some one tell how to prepare 250cm of 0.1 of aqueous lead nitrate

0.1 mol/dm3 right?

 

[saudha]

0.1 mol/dm3 right?

yes

 

[Paradoxical]

Here's some advice for chemistry paper 5 that I found on the coursebook CD. Hope it helps. ^_^