Chemistry paper 5 queries

[rahultaneja2010]

Hello, I was just wondering if someone could tell me exactly how to create a range of concentrations of a substance .... And show the calculation to get it ....

Also, could you please help me solve question 2 e) for this paper

http://www.xtremepapers.com/papers/...d AS Level/Chemistry (9701)/9701_w08_qp_5.pdf

Thank u

 

[Talha]

Help q 2 (a)... will solubility be calculated as mass of solid/ mass of water * 100 ?

http://www.xtremepapers.com/papers/... AS Level/Chemistry (9701)/9701_s11_qp_52.pdf

 

[larina]

Help q 2 (a)... will solubility be calculated as mass of solid/ mass of water * 100 ?

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s11_qp_52.pdf

no they dont ask for percentage solubility
so no need to multiply it by 100...otherwise the formula is correct

 

[Talha]

but the unit of solubility is given g/100g of water ?

 

[OakMoon!]

Help q 2 (a)... will solubility be calculated as mass of solid/ mass of water * 100 ?

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s11_qp_52.pdf

Yes. You've got to multiply by 100.

 

[RGBM211]

Yes. You've got to multiply by 100.

why ?