Calculate the solubility in mol dm-3 of 40g of CuSO4 dissolved in 100g of water at 120°C?
[Cu = 64, S = 32, O = 16]

Wawaaaaaaaaaaaqa

2 years ago

solubility = solute/solvent * 1000/molar mass
solute=40
solvent=100g of water
molarmass of CUSO4 = 64+32+(16*4) = 160
40/100 *. 1000/160 =2.5

Marphix

6 years ago

1000mm³ is equal to 100 dm³
therefore 100 mm³ is 1dm³
(0.25/100 x1000) = 2.5

OMA123456789

3 years ago

but i got 4 that means i failed it

TolusLastDance

3 months ago

solubility = mass/molarmass × 1000/volume

semilorearemu

2 years ago

or you can use the formula
To find in mol/dm3=mass divided by molar mass x 1000 divided by volume (ignore temperature)
To find in g/dm3= mass divided by volume x 1000 over 1

Sammyporsche123

3 years ago

Best method

Solute/Solvent * 1000/Molar mass

U14ay1027

6 years ago

It's 100cm2 and not 100g,
So it is hence
Mass/molar mass ×1000/volume
40/[40+(14×2)+(16×6)=0.25
1000/100=10
Therefore 0.25×10=2.5

BlessingLB

1 year ago

what about the 120degree Celsius

Gae_Red

4 months ago

why is 100g = 1000cm^3?

TolusLastDance

3 months ago

solubility = mass/molarmass × 100/volume

Ibraahiim

1 year ago

solubility = conc. * 1000/volume
= mass/molar mass * "
= 40/160 * 1k/ 100
= 1/4 * 10
= 2.5

made_izzy

11 years ago

I need the real answer to the above. Thank you

FELICIA OKEKE

13 years ago

solubility in m/dm3= solubility in mass/dm3/molar mass

find the molar mass of Cuso4 i.e = 64+32+16 x 4 = 160grams.

40/160 = 0.25x 100 = 25