The solubility of copper sulphate at 30 degree C is 80. What amount of water is required to prepare a saturated solution of 1 kg mass of copper sulphate at that temperature.
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The solubility of salt at 30°
C is 50. Calculate the weight of water required to prepare a saturated solution containing 90g of salt.
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Correct option is B)
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.
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