Which substance imparts a yellow color to the solution using Mohr method, masking the true color of its endpoint? O Eriochrome Black T O Phenolphthalein O Potassium Chromate O Ferric alum indicator
Q: 7. Calculate [Fe³*] in the solution prepared in step 12 of the procedure.
A: Since you have posted multiple questions as per guidelines we can solve only one per session . If…
Q: List the advantages and disadvantages of a potentiometric titration relative to a direct…
A: Advantages 1. It is useful for characterizing an acid. It is used in the titration of polyprotic…
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: A solution may contain, chloride, carbonate, phosphate, and or sulfate ions. No effect is observed…
A: 1) As no impact is seen upon the expansion of 6M HNO3, it affirms that CO32-is missing. In the event…
Q: Explain the stepwise production of titratable 12 from dissolved 02 in the sample.
A: Wrinkler’s method is used to measure the amount of dissolved oxygen in the water. A popular method…
Q: What type of samples can be analyzed using AAS?
A: **Since you have asked multiple questions, we will solve the first one for you. If you want any…
Q: 3. A student performed this experiment, and formed the solid AgoCr04. The solution above the…
A: The solubility of [CrO42-] = 6.67 × 10-5 M. The reaction is, Ag2CrO4⇌ 2 Ag++ CrO42-
Q: what is the colour of the CuCl when it is filtered on the Buchner funnel?
A: Given : To determine the colour of CuCl when it is filtered on the Buchner funnel.
Q: In a redox titration involving potassium permangante with oxalic acid, What is the purpose of the…
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Q: Match the following titration methods to their corresponding end points.…
A: Match the following titration methods to their corresponding end points. Permanganate…
Q: Which of the following scenario will lead into LOSS of yield? a. Use of a filter paper with a…
A: 1) b) Addition of excess H2SO4 2) c) Potassium hydroxide 3) a) Add acid to revert the color back to…
Q: Zinc uranyl acetate, Magnesium uranyl acetate and Cobalt uranyl acetate, forms insoluble salts with…
A: zinc uranyl acetate, magnesium uranyl acetate, and cobalt uranyl acetate, forms insoluble salt with…
Q: A limestone sample weighing 400 mg was dissolved in acid treated with excess sodium oxalate. The…
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Q: Why is it essential that some undissolved Ca(IO3)2 remain in the solution to be measured?
A: Ca(IO3)2 dissociates to corresponding ions when dissolved in water.
Q: To determine the percent purity of a sample containing iron(II) ammonium sulfate; Suggest , 2…
A: The question is based on the concept of quantitative analysis. we have to quantitatively estimate…
Q: Precipitate in gravimetric assay of iron (III) is: Fe(OH); Fe,O3 Fe2(SO4)3 Fe(SCN)3
A: Precipitate in gravimetric assay is used to separate ions from solution by using a precipitation…
Q: Briefly explain why the sparingly soluble product mustbe removed by filtration before you…
A: In Volhard's determination of the ions, the sparingly soluble ions must be removed by filtration…
Q: From the given information, determine which ions are present. Use + for positive, - for negative,…
A: We have to tell which cations are present or not in given mixture analysis
Q: A solid chloride sample weighing 0.09969 g required 18.25 mL of 0.05205 M AGNO3 to reach the…
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Q: Why was sodium acetate added to the centrifugate for chromate ion determination?
A: The chromate ion is denoted as CrO42- in which the central Cr is bonded directly to four oxygen…
Q: List four methods of detecting the end-point of an EDTA titration and explain each.
A: Titration is a method of analyzing an unknown sample with the help of a known sample using an…
Q: Jon 24 The colour exhibited by Bromo cresol indicator in acidic and basic medium is
A: Indicator have different colour in acidic and basic medium
Q: Why is it less desirable to wash AgCl precipitate with aqueous NaNO3 than with HNO3 solution?
A: In a chemical reaction, sometimes precipitates are formed. They are insoluble salts formed during…
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A: The absolute technique in which mass can be used to find quantity needed to electrolyze the…
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: Which indicator is suitable for standardizing a potansium purmanganate solution using ammonium iron…
A: An indicator is used in a titration to indicate the end point of the titration. Generally an…
Q: Why is Potassium Chromate used as the indicator in Mohr Method Determination of Chloride? Explain
A: Potassium Chromate used as the indicator in Mohr Method for determination of Chloride.
Q: Which substance imparts a yellow color to the solution using Mohr method, masking the true color of…
A: This method was given by Karl Friedrich Mohr. This method is used to determine the concentration of…
Q: What will be the molar analytical concentration of Na2co3 in the solution produced when 25.0 ml of…
A: Given, The volume of AgNO3 = 25.0 ml The molarity of AgNO3 = 0.200 M The volume of Na2CO3 = 50.0 ml…
Q: What is the indicator of the end point for the Fajans method? A green fluorescence (B white…
A: Fajans Method as,the precipitation titration in which silver ion is titrated with Halide or…
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A:
Q: bottle of Na2EDTA.2H2O is labeled with an assay of 100.5%, what is this implied? What is the result…
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Q: discuss the mechanism behind the Flame Test. Why does a specific color appear when testing for the…
A: We need to explain the mechanism of flame test for the qualitative analysis of cations.
Q: Why is it necessary to use a buret for measuring standard AgNO3 solution in Volhard?
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Q: Match the following redox titration methods to their corresponding titrants. KMnO4 solution 12…
A: Match the following redox titration methods--
Q: . NaI + Cl H2O + n hexane ------- _____________ bownish solution with dark violet layer on top…
A: It is a single displacement reaction. When NaI reacts with Chlorine, chlorine displaces iodine and…
Q: 1. What is the role of chromate ions in chloride determination? 2. Why pH range is important in…
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: 1o A 5 cm sample of 0.05 mol dm3 sodium chloride is mixed with a 5 cm3 sample of 0.05moldm potassium…
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: 1. What type of precipitate is BaSO4? 2. Why is a filter paper preferred over a sintered glass…
A: When sulfate ion react with barium in an aqueous solution, the given reaction occurs : Ba2+(aq) +…
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A: Applying tests to distinguishing alcohol aldehyde ketone carboxylic acid and esters.
Q: Using the Winkler method to determine the dissolved oxygen level in a water sample, which indicator…
A: We are to discuss which indicator is used in titration for winkler method to determine dissolved…
Q: What is the minimum number of changes of 500 mL dialysate required to reduce a 100 mL sample at 1M…
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
Q: Change of indicators colour is related to the change of the .A Structure .B Intramolecular…
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Q: An unknown mineral has the following properties: a. No effect on addition of 6 M HNO3 b. No effect…
A: Answer - According to the question - Given - Anion are dived into -
Q: calculate to make up 1.0 M acetic acid from 80% concentrate.
A: 100% pure acetic acid is known as Glacial acetic acid. Glacial acetic acid is having 17.4 M…
Q: Match the following redox titration methods to their corresponding titrants. KMnO4 solution Na2S2O3…
A:
Q: What is the acid/base ratio is important in the titrimetric process?
A: Titration It is the process of chemical analysis in which a known concentration of acid or base is…
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
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- Given the volume of 0.4810 M NaOH used determine the concentration of 19 ml sample each from aquaeous layer (Aq) and benzene layer (Or). To reach the end point of Aquqeous layer and organic layer 14.79 ml and 14.18 ml of NaOH used respectively using Phenolppthalein indicator. What will be the Kd of the system.Data Table 2: Complexometric Titration of Tap Water photo shows equation to find water hardness 6 ml of water used (5 ml of tap water 1ml of buffer) Hard Water Trial 1 Hard Water Trial 2 Hard Water Trial 3 Initial Syringe Reading (mL) 2ml 2ml 2ml Final Syringe Reading (mL) .61ml .69ml .58ml Volume of EDTA Consumed (mL) 139ml 131ml 142ml Water Hardness ppm CaCO3 (mg/L) Average ppm CaCO3 (mg/L):Answer the following in 2 decimal places please: Identify what will be the concentration of standard AgNOg, if 3.03 mL is used to turn the color of 15 ml of 0.0738 NacI to reddish-brown with K2CrO4 indicator?
- Analytic chemistry.How to test the Na+ in the original solution? and NH4+?Calculate the gravimetric factor of the following. 2 Fe3O4 is sought(Analyte), 3 Fe2O3 is weighed (Precipitate)200 ml of a water sample required 20 ml 0.025M Hydrochloric acid using methyl orange as indicator but did not give any coloration with phenolphthalein. What type of alkalinity is present? Express in mg/L
- Advantages of potentiometric titrations over 'classical' visual indicator methods: (select the correct statement(s)). Can be used for colored, turbid or fluorescent analyte solution. Can be used if there is no suitable indicator or if the color change is difficult to visualize. Both answers 1 and 2 are correctAside from titrimetric method, name at least two more methods of analysis that can be used for alkaloids.Data Table 3: Complexometric Titration of Soft Water 5 ml of water 1ml of buffer Hard Water Trial 1 Hard Water Trial 2 Hard Water Trial 3 Initial Syringe Reading (mL) 1ml 1ml 1ml Final Syringe Reading (mL) 77ml 79ml 75ml Volume of EDTA Consumed (mL) .23ml .21ml .25ml Water Hardness ppm CaCO3 (mg/L) Average ppm CaCO3 (mg/L):
- PS. Further values required for the solvings are give in the various situations below. (ANSWER) Situation: A community in a mountainous area of Bohol uses water collected from a nearby natural spring. A sample was submitted to a laboratory for the analysis of its total hardness. Required: SHOW YOUR COMPLETE CALCULATIONS. BASED ON THE IMAGE PROVIDED BELOW FOR THIS QUESTION: Calculate the amount of titrant used in each trial to reach endpoint. Report total hardness of the sample as mean ±sd. a. 250.0 mL of 500.0 ppm of CaCO3 solution from a primary standard (assume solvent is distilled water only). Answer : Mass of CaCO3 = 0.125 g b, The EDTA solution was standardized by titrating it with a 25.0 mL aliquot of the CaCO3 solution. How much of the titrant was consumed. Answer: Volume of EDTA consumed = 12.405 g c. Calculate the average titer (mg CaCO3/mL EDTA). Mass of CaCO3 in 25 mL CaCO3 solution: 0.0125 g Answer: 1.008 mg CaCO3/ mL EDTAWhat is the component concentration ratio, [Pr⁻]/[HPr], of abuffer that has a pH of 5.44 (Kₐ of HPr =1.3X10⁻⁵)?Solid cobalt (II) acetate is slowly added to 125 mL of 0.0945 M ammonium chromate solution. What is the concentration of cobalt required to just initiate precipitation? The Ksp of CoCrO4 is 7.1 * 10 -4. Report answer in scientific notation to two sig figs.