Which of the following compounds can be analyzed using a gas chromatography like the one used in lab. sodium acetate sodium hydroxide magnesium sulfate sodium chloride None of the above
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Which of the following compounds can be analyzed using a gas chromatography like the one used in lab.sodium acetatesodium hydroxidemagnesium sulfatesodium chlorideNone of the above
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- She performed a normal phase chromatography to separate the components of an extract. She then created another chromatogram using the same stationary and mobile phase to analyze known compounds. The chromatograms are shown below. Which of the following statements is/are TRUE? a. Spot 1 is less polar than Spot 4 b. Compound B is more polar than Compound C c. Spot 3’s identity is Compound B d. Both B & CThe following chromatogram was obtained using a C18 column and a methanol: water mobile phase. How would the chromatogram change if : more ethanol were added to the sample butanol was added to the sample water was added to the sampleWhich statement is true? Statement 1: In chromatography, the compound mixture moves along with the mobile phase through the stationary phase and the components get separated depending on the degree of interaction and adhesion Statement 2: Compound A is more soluble in the mobile phase compared to compound B. Thus, compound A would most probably have a higher Rf value.
- QUESTION 3 What is one disadvantage of using column chromatography? It is relatively ineffective at separating most organic compounds The desired compound must be the ≥95% majority compound in the initial mixture for a column to be effective It is only effective at separating room temperature gasses It wastes a significant amount of solventWrite TRUE if the BOLD word/phrase makes the statement correct. Otherwise, write the correct WORD/PHRASE that will make the statement true. If there are two bold words/phrases in a number, write your answer for EACH of the bold words/phrases. 1.The stationary phase in the paper chromatography experiment is filter paper. 2. When spots are too concentrated, the spots will appear as a streak rather than a spot.Which statement is true? Statement 1: In Thin Layer Chromatography (TLC), the polar compounds will have a greater Rf value compared to that of non-polar compounds.Statement 2: The stationary phase in TLC is polar.
- Can you TYPE the definitions of the all of words please Chromatography TLC Stationary phase Mobile phase Elute Eluent Rf Value Elution chamber TLC “spotter”Why chromatography is an important tool for analysis of organic compounds?Chemistry 1. In anion exchange chromatography, the stationary phase negatively charged. a. True b. False 2. Give two (2) examples of a planar chromatographic technique:.
- how would you answer question 3? this is a non graded practice worksheetThe following are the uses of TLC except Choices: Determine the number of components in a sample Detect a given compound or compounds in a very crude mixture Determine the concentration of certain components of the mixture Find suitable conditions prior to running a column chromatogram None of the aboveWhen you prepare your sample to run through the column chromatography , what is the first proper action you should do if you notice that your sample did not fully dissolve? A)Add a small amount of the sample B)Boil the sample mixture C)Use the rotovap D)Use a different solvent