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Mechanisms of transport: tonicity and osmoregulation

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A group of biology students weighed several potato cubes and placed them in open beakers containing various sucrose solutions at 30C. The following day, the students weighed the potato cubes again and calculated the differences in mass.
It was determined that solute potential equilibrium was reached at 0.35M.
Solute potential of a solution: ψs=iCRT
  • i= ionization constant (1.0 for sucrose)
  • C= molar concentration
  • R= pressure constant (0.0831Lbarmol1K1)
  • T= temperature in Kelvin (C of solution +273)
What is the solute potential of the potato cubes?
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