Percent change in mass for potato cylinders in sucrose solutions of varying molarity is shown below. The line crosses zero at the molarity where mass change is zero.
Approximately what is the molar concentration of solutes inside the potato cells?
- A
About 0.5 M
- B
About 0.0 M
- C
Greater than 1.0 M
- Dcheck_circle
About 0.2 M
Explanation
The line crosses zero (no net mass change) at about 0.2 M sucrose. At this concentration, the external solution is isotonic to the cytoplasm, so the cytoplasmic solute concentration is about 0.2 M.