Based on what you know about diffusion, which hypothesis best describes which molecule is more likely to move across the semipermeable membrane in this process?
1) Only phenolphthalein will diffuse across the dialysis tubing.
2) Both the phenolphthalein and the sodium hydroxide (NaOH) will diffuse across the dialysis tubing.
3) Neither the phenolphthalein nor the sodium hydroxide (NaOH) will diffuse across the dialysis tubing.
4) Only sodium hydroxide (NaOH) will diffuse across the dialysis tubing.
