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In Experiment 1, two chemical compounds are introduced. Sodium hydroxide, or NaOH, is a basic compound, with a molecular weight of about 40 g/mol. Phenolphthalein is a colored indicator that turns pink in the presence of a base. Its molar mass is almost eight times the mass of sodium hydroxide, at about 318 g/mol. 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? Neither the phenolphthalein nor the sodium hydroxide (NaOH) will diffuse across the dialysis tubing. O Only phenolphthalein will diffuse across the dialysis tubing. Both the phenolphthalein and the sodium hydroxide (NaOH) will diffuse across the dialysis tubing. O Only sodium hydroxide (NaOH) will diffuse across the dialysis tubing. Submit Request Answer