Which of the following statements is TRUE regarding an ideal precipitating reagent? Of unknown chemical composition. Of sufficiently low solubility that has a significant loss of the analyte occurs during filtration and washing. It must have large particles. O Reactive with the constituents of the atmosphere.
Q: 4) How would your calculated value of Ksp be affected by errors introduced from the following…
A: The constant relating the dissolved ions' concentrations is taken as "Solubility product". Some…
Q: What is the purpose of acetone in the final filtration of the precipitate in Gravimetric…
A: The purpose of acetone in the final filteration of the precipitate in gravimetric determination of…
Q: In supposing that a linear relationship exists between the readings taken from the apparatus and…
A: We will first plot the calibration curve using turbidity (y axis) vs concentration (x axis) data.
Q: True or False: Blank titration is indicated for the determination of the concentration of a sample.…
A: A blank titration gives an idea of how much titrant is needed to the titration with sample. The…
Q: 1. A process where impurity is precipitated along with the desired product. 2. Calculate the…
A: Gravimetric analysis is the process in which impurity is also precipitated along with the desired…
Q: While working in a metal processing facility, Letlen had accidentally mixed two metal vats together…
A: Given the total mass of the homogenous alloy sample of Cd and unknown metal taken for titration =…
Q: How was the precipitate obtained after filtration? By scraping from the filter paper and…
A: Filtration is used to separate an insoluble solid from a pure liquid or a solution
Q: Explain how preconcentration of cations with an ion exchanger works. Why must the concentrated acid…
A: Ion exchange chromatography involves the reversible exchange of ions between a solid phase (that is…
Q: In complexometric titration ‘the reaction with analyte should be rapid and complete’ give reason…
A: Complexometric titrations are those titrations in which chelates or soluble complexes, usually…
Q: A solid chloride sample weighing 0.09969 g required 18.25 mL of 0.05205 M AGNO3 to reach the…
A:
Q: Explain how to produce an ideal precipitate in the analysis of sodium fluoride, NaF with silver…
A: by reaction of AgNO3 with NaF, precipitation of AgF occurs. the reaction is as follow :…
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: Dissolved 0.273 grams of pure sodium oxalate (NaCO) in distilled water and added sulfuric acid and…
A:
Q: What weight of the soda ash (impure Na2CO3) should be taken for analysis in order that the number of…
A: 1 mol Na2CO3 (or CO3 2-(aq)) reacts with 2 moles of acid H+(aq). The balanced equation is: CO3…
Q: What is NOT recommended for precipitation of crystal deposits: precipitation in presence of…
A: The correct option is option c.
Q: Calculate the gravimetric factor of the following. 2 Fe3O4 is sought(Analyte), 3 Fe2O3 is weighed…
A: Given, Sought : Fe3O4 Precipitate : Fe2O3
Q: Discuss whether the indicator method applied for determination of alkalinity is satisfactory, is…
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Q: For redox titrations, the oxidation state of the analyte may need adjusting. The analyte can be…
A: Ans. Oxidizing agent that is paired with incorrect elimination chemistry: (A) The excess stannous…
Q: a = Most organic compounds like sugar and table salt are soluble in organic solvents like water and…
A: a and c both are correct.
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: A mixture consisting of 15 mole % Phenol in water is to batch distilled at 260 torr, what fraction…
A:
Q: A 500.0mg of butter was warmed and shaken vigorously with water. The undissolved material was…
A: A Volhard method is an inorganic quantitative analytic method in which an indirect or back titration…
Q: A mixture consisting of 15 mole % Phenol in water is to batch distilled at 260 torr, what fraction…
A: Step 1 , Step 2 ,
Q: Why should deionized water he used throughout the analysis?
A: Metal ions are formed by loss of electrons from metal. Electrons are negatively charged particles…
Q: In the determination of Mass% NaOCI in Bleach Sample (Titration), can sulfuric acid be used instead…
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Q: In this experiment, you will take a 25.00 mL aliquot of vinegar and dilute it to 250.0 mL. You will…
A: Suppose, concentration of acetic acid in diluted vinegar solution is S1 M To determine S1 the…
Q: Dissolved 0.273 grams of pure sodium oxalate (Na2C204) in distilled water and added sulfuric acid…
A: The overall reaction is, 2KMnO4+3H2SO4+5COOH2→K2SO4+2MnSO4+8H2O+10CO2↑ The overall ionic equation…
Q: Which characteristic of a precipitate doesn’t do well for gravimetric analysis. a Readily…
A: The determination of concentration of analyte is done using gravimetric analysis. The analyte is…
Q: A pain reliever is soluble in cold water to the extent of 1.0g/1310 mL and soluble in diethylether…
A: Formula : Distribution coefficient= (solubility in organic) ÷ (solubility in aqueous) Moles of H2O =…
Q: Why a precipitate of manganese dioxide be removed from the potassium permaganate solution before…
A:
Q: Why a filter paper cannot be utilized for the removal of potassium permaganate precipitate?
A: Filter paper can be defined as a semi-permeable paper that helps us to separate fine solid particles…
Q: How do you choose the most suitable precipitate for gravimetric purposes if given many choices?
A: A precipitate is formed when an insoluble compound is dissolved in a solution when a precipitating…
Q: Why is high supersaturation undesirable in a gravimetric precipitation?
A: Qualitative analysis is a branch of chemistry that deals with the identification of elements present…
Q: 1. In using the centrifuge machine, how will this be remedied if there are only 3 separate liquid…
A: In centrifuge machine, A centrifuge force is generated by a high speed rotation is used to separate…
Q: Include relevant qualitative test(s) in your explanation in the separation of benzoic acid from NaCl…
A: Benzoic acid is an organic acid and NaCl is a salt.Firstly, a qualitative test could be done based…
Q: True or False Very Insoluble precipitates are not the best candidates for gravimetric analysis.
A: In order for the analysis to be accurate, The ion being analyzed must be completely precipitated.…
Q: The standardization of same titrant during the determination of BOD5 of water sample was done…
A: The BOD5 test, also known as the Biochemical Oxygen Demand test, is a biochemical test that measures…
Q: Why are many ionic precipitates washed with electrolyte solution instead of pure water?
A: The polar substances are the one which is separated by electric charge and leads to the formation of…
Q: Calculate the purity of the gold piece
A:
Q: The NaOH titrant in this experiment was prepared to be approximately 0.1 M and then was…
A: Given that, in an experiment, approximately 0.1 M of NaOH solution was prepared and then was…
Q: To separate three organic compounds from an aqueous solution, one basic, one acidic and one neutral…
A: The separation can be done using the extraction technique based on the polarity of compounds. The…
Q: Why is high relative supersaturation undesirable in a gravimetric precipitation
A: Qualitative analysis is a branch of chemistry that deals with the identification of elements present…
Q: 00 mL of a diprotic acid primary standard solution was accurately prepared to a concentration of…
A: Given: Volume of diprotic acid = 10.mL Concentration of Diprotic acid = 0.1431 M To Calculate: The…
Q: Analyze the effects caused by various impurities on precipitate during the gravimetric analysis and…
A: Gravimetric analysis is one of the techniques in which the amount of a particular component of an…
Q: A mixture was known to contain three of the four compounds in the table. After the mixture of the…
A: Based on the solubility of the compounds A, B and C in the various solvents such as cold water, hot…
Q: concentration and pH of the H2SO4 solution.
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Q: In a reaction involving the iodination of acetone, the following volumes were used to make up the…
A: Here the mixture contains 5ml of 3.40M acetone, 10 ml of 1.50M HCl ,10 ml of 0.004M and 25 ml water.…
Q: Which of the following is a good description of a standard solution as a titrant? a) selectively…
A: The standard solution of titrant is the solution with a known concentration.
Q: Q1. Dissolved 0.273 grams of pure sodium oxalate (Na2C0.) In distilled water and added sulfuric acid…
A: The question is based on redox titrations. we have added excess of KMnO4 to the Sodium oxalate. the…
7. Please provide detailed explanation.
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- The analgesic aspirin is soluble at 25oC in water to the extent of 3mg/mL and in ethylacetate to the extent of 86 mg/mL. The approximate distribution coefficient of aspirin in these two solvents is __The water sample from the polluted estuary (number 4), was then subjected to a series ofinstrumental analysis like chromatography and spectroscopy to determine the exact identities of thepollutants. What kind of analysis are done to the unknown?a. Qualitative analysisb. Quantitative analysisc. Characterization analysisd. Fundamental analysisAnalyze the effects caused by various impurities on precipitate duringthe gravimetric analysis and suggest the measures to reduce the impactof these impurities.
- 0.1 g of the mixture of na2so4 and k2so4 is taken and 100 ml of solution is prepared. 10 ml of this prepared solution is placed in a beaker and some distilled water is added. A mass of 15.5 mg is obtained by precipitation with Bacl2 at PH=5, then filtering and bringing to a constant weight at 800 °C. Calculate the percentages of Na2so4 and K2so4 in the mixture accordingly.Dissolved 0.273 grams of pure sodium oxalate (Na2C204) in distilled water and added sulfuric acid and titration the solution at 70 °C by using 42.68 ml of KMNO4 solution and has exceeded end point limits by using 1.46 ml of standard oxalic acid (H2 C204) with 0.1024 N. Calculate the normlity of KMNO4. Note that the molecular weight of sodium oxalate (Na2C204) = 134 and its equivalent weight = 67 * %3DA piece of Gold weighing 12,359 Kg is suspected of being contaminated with Iron. To perform an instrumental analysis and To confirm whether or not it contains Fe, a portion of the sample (0.954 g) is taken from the piece and dissolved with 25 mL of aqua regia. Heats up For its complete dissolution, it is cooled and made up to 100 mL. A 10 mL aliquot is taken from this solution and made up to 50 mL. From This last solution is given the appropriate treatment to visualize Fe+2, for which the 1,10-phenanthroline reagent is added. (it forms a complex that is red in color) and is taken to a visible spectrophotometer and with a 12 mm cell a absorbance of 0.45. Previously, a calibration curve of Fe+2 was obtained under the same instrumental conditions obtaining the following data: (view table) Calculate the purity of the gold piece, assuming impurities only due to Fe.
- Dissolved 0.273 grams of pure sodium oxalate (NaCO) in distilled water and added sulfuric acid and titration the solution at 70 ° C by using 42.68 ml of KMNO. solution and has exceeded end point limits by using 1.46 ml of standard oxalic acid (HCO) with 0.1024 N Calculate the normlity of KMNO Note that the molecular weight of sodium oxalate (NaCO) = 134 and its equivalent weight = 67If 30.0 mL of water that is 0.0500 M in Q is to be extracted with four 10.0 mL portions ofan immiscible organic solvent, what is the minimum distribution coefficient that allowstransfer of all but 1.00 x 10–4 of the solute to the organic layer.It is required to know the concentration of an aqueous solution of H2SO4 that appeared in the laboratoryChemistry III and it's unlabeled. To this end, a student of analytical chemistry carried out the followingProcedure: He took 5.00 mL of a fresh and standardized solution of 0.525M NaOH and brought them to a250.0 mL balloon to be completed with distilled water. Subsequently, he poured 15.00 mL of the solutionH2SO4 of unknown concentration in an Erlenmeyer flask and added 2 drops of phenolphthalein.Using a burette filled with the last NaOH solution, he noticed that when adding 39.40 mL of the hydroxidethe Erlenmeyer solution reached a faint but permanent pink. With the above dataDetermine the concentration and pH of the H2SO4 solution.
- Volumetric Analysis The mass of KHC8H4O4 is measured to the nearest milligram; however, the volume of water in which it is dissolved is never of concern—water is even added to the wall of the Erlenmeyer flask during the titration. Explain why water added to the KHC8H4O4 has no effect on the data, whereas water added to the NaOH solution, may drastically affect the data.1. In using the centrifuge machine, how will this be remedied if there are only 3 separate liquid mixtures, in order to separate their respective precipitates 2. what is the extracting solvent for iodide and bromide ions? 3.What is the oxidation number of molybdenum in (NH4)3PO4.12MoO3 ? 4. Give the change in oxidation number for the element in the anion in group V which shows extensive change in color because it has undergone oxidation? 5. Determine the oxidation number of the Arsenic in Magnesium Ammonium Arsenate?Which of the following is a good description of a standard solution as a titrant? a) selectively reactive with the analyte b) only reacts with the matrix c) oxidize when exposed to air d) reacts very slowly but completely