Q: MgBr OCH3
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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: The solution to be tested in this experiment must be buffered to pH of 10. If the pH were…
A: pH is known as the negative logarithm of hydronium ion concentration, if a solution has high pH that…
Q: The sample is dissolved in a mixture containing 10ml of distilled water and 20 ml of dilute…
A:
Q: Why would there not have been any visible cues for the reaction between hydrochloric acid (HCI) and…
A: HCl (aq) + NaOH (aq) ---> NaCl (aq) + H2O(l)
Q: How does the addition of few drops of molar nitric acid affect the pH of a solution containing…
A:
Q: Assess the suitability of methyl orange to signal the equivalence point in weak acid and strong base…
A: Methyl orange is a widely used pH indicator in titrations.
Q: Why is the use of high-precision volumetric material essential for titration?
A: Volumetric analysis is a technique used to determine the unknown concentration of a reactant with…
Q: is 4-bromoaniline soluble in HCl or NaOH or NaHCO3? please provide detailed description why that is?
A: Polar compounds are those when dissolved in water produce two charged species that is cations…
Q: What are the functional groups for the Qualitative Tests for carbonyls and Unknown Carbonyl.
A: We are given an unknown carbonyl compound and its test results and IR spectrum.
Q: Iodometric titration of vitamic C with sodium thiosulfate Why was the known excess of iodine…
A: Ascorbic acid (vitamin C) is mainly found in fresh fruits such as lemon, orange, lime, peach,…
Q: Explain the suitability of using phenolphthalein indicator in the assay of acetic acid.
A: Indicators - Indicators are basically weak organic acids or bases. Their dissociated forms give…
Q: What is the equivalence point pH of a 0.1M solution of phenylalanine that is fully titrated with…
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Q: 1. Would the isomerization of maleic acid occur if the reaction were performed in neutral water? 2.…
A: Since you have asked a multiple sub-part question, we will solve the first three sub parts for you.…
Q: Carly the chemist consistently obtained a dark pink endpoint in all of her titrations in her KHP…
A: An indicator depends on its acid strength i.e. pH range where the color of the indicator changes…
Q: What weight of pure Na2CO3 should be taken so that about 25mL of approximately 0.1M HCl will be used…
A: Given values-> Volume of HCl= 25ml = 25 × 10^-3 litere Molarity of HCl = 0.1M Molar mass of…
Q: What challenges would you encounter with the titration if you had used apple cider vinegar or…
A: Answer is explained below. When as an analyte in the titration, apple cider vinegar or balsamic…
Q: Why did the colour of the solution in the conical flask change at the end of the titration?
A: In the titration there is color change at the end.
Q: How do the reactions of phenol samples with FeCl3compare? Which structural component of the phenols…
A: Since we only answer one question at a time, we'll answer the first one. Please resubmit the…
Q: Why did the color of the solution in the conical flask change at the end of the titration?
A: Titration : The method used to determine the concentration of a known substance using another,…
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: 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: What is the effect of buffer additives (organic acids) on the enhancement factor?
A: Buffer additives are used to modify the viscosity and stability of protein solutions. Additives like…
Q: Why is the electrometric method of pH determination more accurate than the colorimetric method?
A: The Electrometric Method for assessing a solution's Hydrogen Ion Concentration, or pH value, entails…
Q: After a student determined the pK values of a H3PO4 by titration, she realized that she had recorded…
A: In the titration, pka Value is determined by titration with H3PO4 with NaOH. Molarity of NaOH Used…
Q: what titrant will you use in preparing a substance with a pH of 7(green) whereupon the addition of…
A: Bromothymol blue is a pH indicator which is used to measure substances that have a neutral pH. It is…
Q: Explain how the reported solubility product of borax will be affected if some of the solid borax is…
A: Le chatlier’s principle- This principle helps to determine Effect of temperature on equilibrium of…
Q: How will the reported solubility product of borax be affected if some of the solid borax is…
A: Given that some of the solid borax is inadvertently transferred into the Erlenmeyer flask and…
Q: In excess of alkaloidal reagent, did the precipitate formed dissolve or not? What is the evidence
A: The alkaloids are a class of vegetable compounds which are chemically similar to ammonia. Like…
Q: Explain the problem with each of the following techniques. The sodium hydroxide solution was not…
A: Distilled water you add to NaOH solution will change its volume but will not change the number of…
Q: Question attached
A: In a sample of water, there are many ions like calcium, magnesium and aluminium is present. Many of…
Q: What is the graduated glass tube used to add the titrant (base) to the analyte (acid)?
A: 1) To identify the graduated glass tube which is used to add the titrant (base) to the analyte…
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…
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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: Different masses of aspirin (e.g 10mg, 100mg, 1000mg) used in an acid base titration. what could be…
A: Since we are not providing the handwritten notes and according to our guidelines, we are providing…
Q: Why is the precipitate washed with hot water after separating out Pb2+? What is the purpose of the…
A: So this is a test for Pb2+ and finally it involves the precipitate of PbCl2. PbCl2 is not soluble in…
Q: A student recorded the following end-point volumes in an iodometric titration using starch…
A: Titration error is -3.89 x 10-4 .
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: The titration curve from the reaction of a strong base with a weak acid is shown below. Recalling…
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Q: why is there bubbles formed when aniline was added to concentrated HCl?
A: Aniline is basic in nature and HCl is an acid. So, acid-base reaction will take place.
Q: 2. What is the physical observation when the endpoint has been achieved during titration?
A: Endpoint: refers to the point at which the indicator changes color in an acid-base titration.
Q: Use the titration curve for the weak acid to calculate the pH of a 0.150 Msolution of that weak…
A: Solution: Equivalence point volume = Veq Half equivalence point volume = 1/2 Veq pH at half…
Q: How would the calculated molar concentration of the analyte be affected if the burette is rinsed…
A: Before starting any titration it is very important to rinsed the burette with the corresponding…
Q: In the experiment of the acid dissociation constant of a weak acid using potentiometric titration,…
A: Solid NaOH can absorb water molecules from the atmosphere and hence, they are hygroscopic.…
Q: Why should be solution of sodium bicarbonate be boiled during titration with HCI?
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Q: Why use basic buffer solution in an experiment for hard water analysis?
A: Buffer solution is solution which resist the change in pH of solution.
Q: What was the purpose of performing titration analysis on the product synthesized in relation to the…
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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…
What would be the effect of a more dilute solution of NaOH on the titration?
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- Why should be solution of sodium bicarbonate be boiled during titration with HCI?Describe why the inside wall of the flask is rinsed with deionized water during accurate titration. Does this washing affect the molar quantity of acetic acid in the sample? Describe..?What factor affects the ‘strength’ of a buffer? Why was benzoic acid used as a solvent when making up the glucose stock standard solution?
- The solution to be tested in this experiment must be buffered to pH of 10. If the pH were considerably higher, such as 12, how would the [OH−] change? How might this affect the titration?What is the rationale of diluting the solution in the flask with washing distilled water at the start or in the middle of a titration? Can this step affect the calculations?Calculate the pH of the NH3/NH4+ buffer after the addition of the HCl. How does it compare to the experimental value?
- Calculate the pH of the NH3/NH4Cl buffer after the addition of NaOH. How does it compare to the experimental value?What is the purpose of this experiment? To analyze the purity of salicylic acid after the recrystallization method of purification.Why is it not necessary to know the exact volume of deionized water added when preparing the samples for titration?
- How will the reported solubility product of borax be affected if some of the solid borax is inadvertently transferred into the Erlenmeyer flask and included in the titration analysis?Iodometric titration of vitamic C with sodium thiosulfate Why was the known excess of iodine generated using iodate rather than weighing out a known excess of iodine?The test solution should be acidified with nitric acid before silver nitrate is added to detect the presence of halides. Explain.