When 50cm2 of a saturated solution of sugar of molar mass 342 g at 40oC…

When 50cm2 of a saturated solution of sugar of molar mass 342 g at 40oC was evaporated to dryness, 34.2g of dry solid was obtained. The solubility of sugar at 40oC is
  • A.
    2.0 mol dm-3
  • B.
    3.5 mol dm-3
  • C.
    7.0 mol dm-3
  • D.
    10.0 mol dm-3
Correct Answer: Option A
Explanation

solubility = mole * 1000cm3/volume
mass/molar mass * 1000cm3/volume
= 34.2/342 * 1000cm3/50cm3= 2.0moldm-3

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