Which type of chromatography is most useful for determining the concentrations of minerals in bottled water? size exclusion ion-exchange gas thin layer adsorption
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- Can paper chromatography be used to separate and identify very volatile substances? Why? Please explain comprehensively.Why chromatography is an important tool for analysis of organic compounds?In chromatography, the compound that is least soluble in the mobile phase a) Travels the furthest away from the line of origin b) Stays closest to the line of origin
- Waht is the composition of the reverse phase chromatography? non-polar stationary phase - non polar mobile phase polar stationary phase - non polar mobile phase polar stationary phase - polar mobile phase non- polar stationary phase - polar mobile phaseCan paper chromatography be used to separate and identify very volatile substances? How do I prove this.Chromatography involves the separation of two or more compounds/ions caused by their molecular interactions with two phases. True False
- In molecular exclusion (size exclusion) chromatography, the molecules have the longest retention times. a) the larger molecules b) the smaller moleculesAs distillation method is used to seperate a homogenous mixture, which kind of mixtures chromatography can seperate? Give some example.What is the stationary phase in thin layer chromatography and its polarity? Choices: Cellulose - non-polar Cellulose - polar Silica - non-polar Silica - polar
- The paper used in chromatography is made of molecules with___parts A polar B nonpolarIn thin layer chromatography, the solvent (mobile phase) move up the stationary phase carrying some of the components of the sample along with it via O traslocation O osmosis capillary action gravitationIn normal-phase HPLC chromatography, the stationary phase is polar and the mobile phase is nonpolar. In the reversed phase we have just the opposite; the stationary phase is nonpolar and the mobile phase is polar. Describe molecules in which move faster or slower in each case.