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?.
