What would happen if the spots on a plate were below the solvent level when the plate was placed in the developing chamber?

Q: Why is a filter paper preferred over a sintered glass filter

A: Filtration is a method used to distinguish solids from liquids or gases, using a filter medium that…

Q: Write the principle behind the froth floatation process. What is the role of collectors in this…

A: Various processes are used for extraction of minerals. These minerals are very useful for…

Q: What substance is used to help dry your sample rapidly?

A: The substances that rapidly absorb moisture from the surrounding atmosphere or dry it out are called…

Q: Fresh solvent - eluent Mobile phase Sample components A Celumn packing Stationary phase suspended in…

A: B is less polar and A is more polar Because the stationary phase is polar, polar molecules will…

Q: Briefly explain why it is important to use crucible tongs when you transfer the heated crucible (b)…

A: A quantitative analysis where the amount of substance is  calculated present in the sample by…

Q: Screen. 7 With increasing polarity of solvent the

A: UV-Vis Spectroscopy can be defined as a technique that is used for measuring amount of light…

Q: What is the best technique for pushing down on the plunger to carefully form a drop? Select the most…

A: To decribe the best technique for pushing down the plunger to carefully form a drop.

Q: 5. Discuss how melting points of the impure sample and recrystallized sample could have been used to…

A: Melting point is the temperature at which there is a change from the solid to the liquid state i.e.…

Q: A supporting electrolyte is usually added to the analyte solution to minimize solution…

A: 1. SOLUTION - The correct option is (a) minimize solution resistance According to the question -…

Q: Why should you place the test tube at an angle over the flame?

A: Answer of the question given below,

Q: Use the data below to determine  your Unknown material. Data for all wet chemical tests and…

A: We can determine unknown material step by step which is given below.

Q: A colored band shows an excessive amount of tailing as it passes through the column. What can you do…

A: Given problem, A colored band shows an excessive amount of tailing as it passes through the column.

Q: How long is the anticipated time for the oily layer formation when isopropyl alcohol undergoes Lucas…

A:

Q: What are the advantages and disadvantages of liquid-liquid extraction method?

A: Principal of liquid-liquid extraction method :

Q: During the experiment, we transferred the liquid part of the centrifuged orange tubes to 3 new…

A: During the experiment, we transferred the liquid part of the centrifuged orange tubes to 3 new…

Q: When isolating a solid compound after recrystallization, which is the appropriate technique to use,…

A: Recrystallization is an experimental technique of separating pure compound from the solution…

Q: Why is splitless injection used with purge and trap sample preparation?

A: The collection of all of the analyte from the unknown and to inject whole of the analyte into the…

Q: While recrystallizing, what should you do if you have solid particles that don’t dissolve even after…

A: Recrystallization is the process by which non volatile organic solids are purified. In this method…

Q: Why is it important to handle the TLC plate in such a way that your fingers do not come in contact…

A: Chromatography works on the principle that different compounds will have different solubilities and…

Q: What are the possible reasons why there are no spots on the Developed Plate after analysis?

A:

Q: How does temperature, flow rate of carrier gas, boiling point and column suupport affect gas…

A: Explanation. Retention time-     Retention time is the amount of time a compound spends on…

Q: What should you do if there are insoluble impurities after heating up your sample in the…

A: A multiple choice question based on purification, which is to be accomplished.

Q: Why do we use more than one solvent in the cold extraction method?

A: In chemistry like dissolves like

Q: Explain how solvent trapping and cold trapping work in splitless injection.

A: In Gas chromatography both split and splitless injection takes place. Split injection is used when…

Q: Give at least five factors to consider when performing chromatography (paper, thin-layer, liquid,…

A: Chromatography is a technique that is used for the separation of components of a mixture.  The…

Q: - what are The Principle and process of chemical Vapor Deposition (CVD) ?

A:

Q: Before applying the eluent on the column, why is it important to drain the solvent to a level right…

A:

Q: What method was used in the experiment to determine the boiling point of a sample? Select one: A.…

A: Here I have justified the experiment to determine the boiling point of sample

Q: 7) Describe how to prepare a dried sample fit for melting point analysis.

A:

Q: Effect of Filler Particles in a Polymer Campsite and     Filler Loading

A: Introduction: The broad use of polymeric materials such as plastics in a variety of applications…

Q: What error is introduced into the determination of an Rf value if the top is left off the developing…

A: In chromatographic technique, the components of a mixture are separated by using a developing…

Q: In recrystallization, fluted filter paper is used instead of a regular cone because it minimizes its…

A: In recrystallization, an impure solid compound is mixed with hot solvent to form a saturated…

Q: Why is a filter paper preferred over a sintered glass filter?

A: Filtered paper is made up of fiber and there are numerous holes (obviously of microscopic size) in…

Q: Write the Separation of heavy metals using solvent extraction technique.

A: Solvent extraction is an analytical method in which constituents are separated based on their…

Q: Provide indepth details and analysis for experiment. Use the data below to determine your Unknown…

A:

Q: Why should the washing solvent be cold in the suction filtration step?

A: Suction filtration is the final step for separating the compound from the solution during the…

Q: What would happen if the student did not stop the development before the solvent reached the top of…

A: The solvent would wash away the dye.

Q: What is the use of the glass rod in transferring liquid reagents?

A:

Q: After vacuum filtration why is it important to allow the product to sit out for a few days before…

A: The separation of solids from liquids by passing the mixture through a filter and where, on one…

Q: Which is the most appropriate way to dispense liquid using a dropper (vertical, 45° angle, or…

A: Dropper is a device used to transfer small quantities of liquids.

Q: Why must the spots be above the level of the development solvent in the developing chamber?

A: Given statement,     The spots be above the level of the development solvent in the developing…

Q: What should we use d) To hold a very hot crucible: _________________ e) To hold test tubes so that…

A: (d) Crucible is an apparatus used to heat Chemical materials over burner or inside of over , where…

Q: Explain the fuctions of each part of the reflux set-up

A: Reflux setup consist of three parts -- 1) A heating system 2) a round flask 3) a condenser.  It is a…

Q: The following conditions may not cause tailing EXCEPT a. Thick filter paper as the stationary phase…

A: Tailing in thin layer chromatography :  Due to the using high concentration of solute or other…

Q: How to get maximum % recovery from recrystallization and crude weight

A:

Q: Should you increase the diameter or length of the chromatography colum for increasing throughput?

A:

Q: What do you think would happen to your recrystallization solution if you did not use a pre- heated…

A: Re-crystallization process is a process in which the compounds which are not soluble in cold solvent…