Question

Calculate the amount of solute that seperates as a solid when 30 gram of a saturated solution prepared at 50 degree C is cooled to 30 degree C . The solubility of the ien solute is 35 at 50 degree C and 21 at 30 degree C

Answer 1

Answer:

Correct option is

B

180g

weight of salt = 90 gram,  

solubility  = 50

sing formula  

solubility of solute =  

weightofsolventinsaturatedsolution

weightofsoluteinsaturatedsolution

​

×100

or 50=  

weightofsolventinsaturatedsolutio

90gm

​

×100

so weight of solvent in saturated solution =  

50

90gm

​

×100=180gm

Hence 180 gm of water is required to prepare a saturated solution.