Which of the following statements regarding the separation and purification of organic compounds are correct? A. In column chromatography, a solid such as alumina or silica gel is used as the stationary phase. B. The R_f (retardation factor) value in thin layer chromatography can be greater than 1. C. Paper chromatography is a type of partition chromatography in which water trapped in the paper acts as the stationary

Step-by-step solution

Statement A is correct: In column chromatography, a solid adsorbent like alumina or silica gel acts as the stationary phase. Statement B is incorrect: The R_f value is the ratio of the distance moved by the substance to the distance moved by the solvent front. Since the substance cannot move further than the solvent front, the R_f value is always less than or equal to 1. Statement C is correct: Paper chromatography is a form of partition chromatography where the water trapped within the cellulose network of the pap