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Question
a) Discuss the effect of solvent polarity on Rf-values.
b)Explain how the Rf (Retention Factor)-values can be in agreement or disagreement with the “like dissolves like” principle?
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- Use the change of state interactive to answer the question. Which of the statements describe limitations or safety concerns of this interactive? O The interactive assumes that the reaction is a closed system. O The interactive assumes that the temperature of a solid can be casily measured using a temperature probe. O Boiling points must be carefully determined for liquids that are flammable, such as benzene. O The interactive assumes substances change phase as temperature changes.(c) Draw a well labelled suitable diagram/quick sketch to convert [ turbidity containing raw water to de-aerated demineralized turbidity free water.If 0.18 mL was used in the blank titration to achieve the same end-point color in the previous question, what is the correct total hardness of the sample? (Picture given is the previous question)
- Data Table 1 Enter the calculated molarity and measured conductivity values in the table. Data Table 1: Experimental Data Sodium Total Sodium Chloride Standard Chloride Volume Concentration (M or Conductivity (µS) (g) (mL) mol/L) Blank 100.00 8.965 A 0.0059 100.00 В 0.0531 100.00 0.1029 100.00a) Discuss the effect of solvent polarity on Rf-values. b)Explain how the Rf (Retention Factor)-values can be in agreement or disagreement with the “like dissolves like” principle?Using the results from the solubility test table, what can be concluded about the structure/property of each polymer?
- Table 1. Solubility Tests. Functional Group Observations (specify type if any) Sample in concentrated (+/-) H2SO4 Color orange Hydroxyl group Hydroxyl group Hydroxyl group 1-butanol Color orange 2-butanol Color orange diisopropyl ether Look at the structures of compounds tested for solubility in concentrated H2SO4. What generalization can be made for a substance to be soluble in concentrated H2SO4 ?Why do two layers form when solutions containing water are added to the extracted dichloromethane (CH2CI-2) solution?The surface of the silica gel has a structure that looks like this diagram below. Suppose you used a plate coated with silica gel, with propanone, CH3COCH3, as the solvent for thin-layer chromatography. Sno Suppose also that the mixture you were trying to identify contained • benzaldehyde •benzanilide • phenol 1) rank the Rf Value from large to small 2) name the IMF between each compound and the silica gel OH OH main body of silica structure