Write a scientific procedure (experimental) in laboratoryto replaced the Br with CN  by the addition of NaCN . What if the purification method at the end? And what is the type of this reaction !

Q: If a 0.4340g sample of methenamine were treated in the usual way with 25mL of 0.6500N H2SO4 and…

A: Given: Normality of H2SO4 = 0.6500 N Volume of H2SO4 solution = 25 mL = 0.025 L…

Q: Solve for the dissolved oxygen content of the water sample in Day 1 if the Na₂S₂O3 titrant (0.1152…

A: Given as The volume of Sample=30 mL Three readings of the sample are 10.28 mL, 9.84 mL and 10.02 mL…

Q: Explain: While you are performing the halogen test, and before the addition of AGNO3 you should…

A: While performing the halogen test, before the addition of AgNO3, we should acidify the sodium fusion…

Q: The sample is dissolved in a mixture containing 10ml of distilled water and 20 ml of dilute…

A:

Q: .) An experiment similar to the one performed was done in order to determine the Ksp of Ba(OH)2. In…

A: Given Base Ba(OH)2 Acid (HCl)when we mix them acid base neutralisation reaction occur and we get…

Q: Nitrous acid-observation is gas bubbles Hinsberg test-obsersvation is one layer. THen acid is added…

A: Hinsberg test  is a chemical tes used to distinguish between primary, secondary and tertiary amines.…

Q: what is the purpose of using the KL solution of absobic acid in peach sample?

A: In titration of ascorbic acid with potassium iodate in peach sample we use KI solution , HCL and…

Q: 3) An unknown solution is subjected to the same flame-test, solubility test, and anion test that you…

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: Why is it necessary to completely fill the rubber tubing of the stopcock with the  solution before…

A: Titrations are done by using a buret. A burette is the volumetric measuring glassware carries marks…

Q: 3. Why do the glasswares need to be rinsed with 0.1 M HNO3 prior to use?

A: M symbol denote molarity that determines concentration of nitric acid. Acid is a substance that give…

Q: If all the N in 10.0 mmols urea, CO(NH2)2, is converted to NH4HSO4, and if with excess NaOH the NH3…

A: The volume of NaOH is required to be calculated.

Q: What is the rationale of diluting the solution in the flask with washing distilled water at the…

A: Titration is done in neutralization reactions or redox reactions to determine the concentration of…

Q: Describe how to analyze a solution of Nal by using the Volhard titration?

A: Solution - According to the question - Given - Volhard titration - The volhard method is an indirect…

Q: The Kjeldahl procedure was used to analyze 256 L of a solution containing 37.9 mg protein/mL. The…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: In Filkenstein test, the reaction is driven by the precipitation of the NaCl or NaBr in the acetone…

A: Filkenstein test or reaction is a bimolecular substitution reaction (SN2) reaction where one halide…

Q: 17 When 100. mL of 6.00 M HCl is diluted to 300. mL, the final concentration is _____?

A: Stoichiometry is mainly based on the calculation of moles and volumes. These two values are used to…

Q: Draw/illustrate the chemical reaction involved in Seliwanoff’s test and explain the purpose of this…

A: Seliwanoff’s test is mainly uesd to distinguish between aldose and ketose. The detailed mechanism is…

Q: Explain the role of phenolphthalein in the standardization of NaOH with KHP

A: Phenolphthalein is an organic compound which is colorless in acidic solution and pink in basic…

Q: Why is an aqueous solution of NaCl used to prepare the solutions for runs 2-4 instead of deionized…

A: Deionized water contains no ions in it where as the sodium chloride solution having sodium(Na+) ion…

Q: Why homogenously formed precipitates are better suited for analysis than a precipitate formed by…

A: The gravimetric method is inherently more accurate than the volumetric method because the…

Q: .. Suppose you wanted to further purify the acidic or basic component of your mixture. What might be…

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Q: Write, in each step, the formula of a reagent that: to. Give a precipitate with Pb2+ but not Bi3+.…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Question attached

A: In a sample of water, there are many ions like calcium, magnesium and aluminium is present. Many of…

Q: At any stage of the saponification experiment of ethyl acetate, when the 25mL sample taken from the…

A: First we will calculate the amount of HCl used for reacting with excess NaOH left in saponification…

Q: What sample size should be taken

A: Na2CO3+2HCl(excess) =H2CO3+2NaCl+HCl(remains)                               remain HCl+NaOH=NaCl+H2O

Q: Heptadecanoic acid should be soluble in cold concentrated sulfuric acio O True

A: The given compound is: Heptadecanoic acid. Is it soluble in cold concentrated sulfuric acid?

Q: From a 50.0 mL drink sample suspected to be spiked with cyanide (CN-), an 10.0-mL aliquot was taken…

A: A question based on concentration terms that is to be accomplished.

Q: How would the calculated molar concentration of the analyte be affected if the burette is rinsed…

A: In laboratory while we use burette for titration,we should always rinse it with water at first and…

Q: Calculate the pH of the NH3/NH4Cl buffer after the addition of NaOH. How does it compare to the…

A: The pH of a basic buffer solution is determined using the Henderson-Hasselbalch equation - pOH =…

Q: Why do you need to swirl the flask constantly during the titrimetric analysis?   a. To prevent the…

A:

Q: Explain the reason behind the addition of the starch indicator near the endpoint for this analysis.…

A: Starch is an indicator used in iodometric titration and it turns dark blue when iodine is present in…

Q: In Part A, the mass of KHC,H,O, is measured to the nearest 0.0001 g. However, the volume of water…

A: The explanation for the following is:

Q: A suitable target for the titration is 30.0 cm3 of 0.025 moldm-3 Br2(aq) Justify why a much smaller…

A:

Q: Explain briefly What would happen to the total hardness if the solution was buffered to pH 13.00?

A: As per the rules, only the first question can be answered.

Q: In two SEPARATE flasks containing similar component of carbonate mixtures, the following volumes of…

A: Phenolphthalein is a chemical compound with the formula C20H14O4 . Phenolphthalein is often used as…

Q: When one would like to run an experiment with EDTA, sometimes it is necessary to do back titration.…

A: Sometimes when performing EDTA titration the metal ions block the indicator or metal  EDTA complex…

Q: If 2 mL of 0.02 M AgNO3 is added to 2 mL 0.011 M K2CrO4, which reagent is in excess? should a…

A: Solution-  2mL of 0.02 M agNO3-2mL ×0.02 mol L=0.04 M mol AgNO32mL of 0.0011 M K2CrO4-2mL ×…

Q: if all the N in 10.0 mmols urea, CO(NH2)2, is converted to NH4HSO4, and if, with excess NaOH, the…

A:

Q: B) A mixture of AP" and Mg* in a sample of water. Explain a procedure to analyse this mixture using…

A: In a sample of water, there are many ions like calcium, magnesium and aluminium is present. Many of…

Q: Ethanol is needed as solvent when preparing phenolphthalein color indicator in volumetric…

A:

Q: To consume an analyte thoroughly, excess reagent has is added. If 10.00 ml of a 0.1000 M HCI is…

A: Solution: We know aspirin is analyzed quantitatively by simple acid-base titration method. In the…

Q: As a chemist, you know that when analyzing a 50-ml sample for total hardness, every milliliter (1.00…

A: General chemistry

Q: Aside from repeating the experiment, search literature and suggest what can be done to remedy a…

A: Remedy for a sample that is ‘over-titrated'   1 - Over-titration is a state where there is more…

Q: The standardization of same titrant during the determination of BOD5 of water sample was done…

A: When standard sodium thiosulphate is prepared it is standardized with primary titrant like potassium…

Q: Determination of Water Hardness experiment was designed and suitable for bottled mineral water. What…

A: Principle: The determination of hardness is carried out by titrating water sample with Sodium salt…

Q: Solve for the dissolved oxygen content of the water sample in Day 1 if the Na2S2O3 titrant (0.1152…

A:

Q: Imagine that you don't know Ca for the acetic acid, but have determined Vend to be 25.0 mL and know…

A: Given: Va = 50.00 mL Vb = 25.0 mL Cb = 0.1200 M

Q: You are planning to determine the concentration of acid in vinegar by titration with a suitable…

A: Vinegar contains acetic acid, which is a weak acid.