Why does the amount of the dinitration increase at high temperatures?

Q: 5. Why is it important that your glassware be dry for Part 2? Postulate as to what would have…

A: From the reaction equation, we can conclude that there is a equilibrium existing between the…

Q: After preparing the column, why should the silica get never to dry?

A: Column chromatography is a technique used to spearate organic  compounds from a mixture. It works…

Q: Would it be reasonable to store the standardized KMnO4 solution in a screw- cap bottle, if the cap…

A: Answer - According to the question - Given - KMnO4 is not a primary standard and is standardized…

Q: ) Which technique would be best to determine the amount of nitrate in drinking water? Select one.…

A: Answer of 1 and 2 :

Q: What is the most common filter paper used in the laboratory? A. Cellulose fiber filter B. Glass…

A: Given: Three types of filter paper Cellulose fiber filter Glass fiber filter Membrane filter To…

Q: What is the difference between the reaction of soap-water and synthetic detergent-water mixture to…

A: The composition of soaps is sodium stearate and composition of detergents is generally sodium…

Q: Describe chromatography. Include the following words: Physical change, Intermolecular Forces,…

A: physical change: A change in the physical condition and  properties of substance that is change.…

Q: Chemistry how would i dilute a 50 mM stock to make a 5mM stock?

A:

Q: What is the difference between oil/water (O/W) type and water/oil (W/O) type emulsions? Give an…

A: Emulsions are the mixtures of 2 or more than 2 liquids that are generally immiscible. It is a type…

Q: Why should solid diazonium salts never be separated from their mother liquor by filtration?

A: Why solid diazonium salts never be separated from their mother liquor by filtration - Let's discuss.

Q: 10. An unknown solution containing one of the salts ZnSO4, MgSO, or SrCl, gives a negative flame…

A: From given  Initially more and less active metals nature is discussed and then the unknown salt in…

Q: Why asbestos is used in chromatography ?

A: asbestos : "The crude mineral is  a piece of rock or stone. It has  been called a physical paradox…

Q: 1: What is the molar concentration of a 4% solution of borax? (sodium tetraborate decahydrate,…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: This is the laboratory apparatus used for liquid-liquid extraction. Florence flask Volumetric flask…

A: For liquid liquid extraction is extraction of a particular compund from a solution with the help of…

Q: Suppose 0.450 M Mg(OH)₂ is used to titrate the sample instead of NaOH. What is the normality of…

A: Given: Concentration of Mg(OH)2 = 0.450 M

Q: Saturating the aqueous phase by adding a salt such as Na2CO3 is called: Select one: O a. Emulsion O…

A: Given: Saturating the aqueous phase by Na2CO3 To find: Role of sodium carbonate in above process…

Q: What are some advantages of the membrane filter technique in the analysis of a water sample? Some…

A:

Q: What is deliquescent salt?

A: Deliquescent salts have tendency to dissolve in the absorbed moisture and form their own solution.

Q: How many grams of % 15 % and 3 % Zinc oxide manufacturing needed for mix ointments to Produce a 135g…

A: Percentage mass or weight (%W/W) can be calculated by using Following formula - Percentage weight =…

Q: 50 g of salt was dissolved in 250 g of water. Find the mass fraction of salt in the extracted…

A: Mass fraction: It defined as WB = mb/m

Q: In thin-layer chromatography on silica gel TLC plates, which of these is true? a. More polar…

A:

Q: If a small amount of impurity is present in a sample, what will be its effect on the melting point…

A: Types of impurities that can be present in the sample: Miscible impurity: Such impurity is soluble…

Q: Also named as Beilstein test *

A:

Q: There are two forms of HPLC – normal phase HPLC and reversed phase HPLC. In normal phase HPLC, the…

A: HPLC stands for High performance liquid chromatography, it is technique used to separate components…

Q: Why should the heating of ammonium chloride be done inside a fume cover/hood?

A: A chemical fume hood is used to protect researchers working in a chemical laboratory from the…

Q: When would it be preferable to use a plastic volumetric flask instead of a glass flask?

A:

Q: During recrystallization process, if your solution has come to room temperature and no crystals have…

A:

Q: Write the dispersed phase and dispersion medium of paints.

A: Colloidal solution contains two phase: dispersed phase and dispersion medium.

Q: What are the two types of membrane usually employed for western blotting?

A: The two types of Membrane employed for western blotting are:- (1) nitrocellulose  (2) PVDF…

Q: Saturating the aqueous phase by adding a salt such :as Na2CO3 is called :Select one a. Drying agent…

A: b. Drying agent.

Q: 24 The volume tric Karl Fischer method is suitable for samples with a high water content. 7…

A: THE ANSWERS ARE :-        (36) TRUE.          (37) FALSE.           (38) TRUE .             (39)…

Q: Why is fractional distillation more efficient than simple distillation when purifying liquid…

A: Fractional distillation is used to separate a mixture of liquids with similar boiling points…

Q: What is another factor that can influence fractional distillation’s success other than the number of…

A: Distillation process involving conversion of liquid into vapours that subsequently condensed back to…

Q: why should a small volume of the cold solvent be used for rinsing the pure crystal?…

A: Using a cold solvent, the impurities present in the surface of pure crystal is removed by rinsing…

Q: How much sterile water will you have to add to the concentrated solution you calculated from problem…

A: The question is based on the concept of solutions.   Molarity is a method of expressing…

Q: Ter solution differ from an unbuffered solution

A:

Q: If fine sand were an impurity in a sample, how would it effect the melting point? What would make…

A: Melting point of a substance is the temperature at which  its solid phase and vapour phase exists in…

Q: Briefly discuss the effect of alkalinity on flocculation.

A:

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: Why is water not used as a solvent in extraction of nuts

A: A question based on extraction of nuts, which is to be accomplished.

Q: What roles do solvent, density and polarity play in liquid/liquid extraction

A: i. Solvent =  In liquid - liquid extraction, the solvent which is needed to be extracted should not…

Q: To identify 1° alcohol from 2° alcohol and 2° alcohol from 3° alcohol giving Immiscible layer as the…

A:

Q: What is the difference between gel filtration and gel permeation?

A: Gel Filtration Chromatography is a technique which use to sperate out the molecules by there the…

Q: Give the rule in reading the meniscus when measuring colored and colorless solutions.

A: The rule in reading  the meniscus when measuring colored and colorless solution is given below.

Q: BRIEFLY explain why steam distillation can be used to purify or isolate temperature-sensitive…

A: A question based on analytical separation that is to be accomplished.