Table Resuits of roubility tests for C4Hio O .... Solubility Test Observations +/- , 1. distilled water cle ar, lo lor less sol'n 2. litmus paper test change in either red ..... or blue litmus paper write @i tLompound. is solvent. IF not., soluble/imiscible in Write
Q: Which of the following statements is important when assessing a gravimetric analysis? the desired…
A: Precipitation of gravimetric method : The analyte is separated from a solution of the sample as a…
Q: If the same mass of Na,sO4 (MW: 142 g/mol) and K2SO4 (MW: 174 g/mol) were weighed and used for the…
A: Given: Mass of Na2SO4 and K2SO4 taken is the same (assuming 100 g).
Q: Calculate for the equilibrium or solubility constant of the dissolution of 0.065 m M2SO4 with the…
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Q: (C) A standard sclution of hydratcd iron(11) sulphate, FeSO,.XH20, was preparcd by dissolving 5.8 g…
A: (i) Observing the given reaction shows that electrons are lost from iron. So in given titration…
Q: How much alum product would be lost to the recrystallization solution if you had 42.5 mL of solution…
A: Lost alum during recrystallization is equal to the amount of soluble alum in the solution obtained…
Q: As part of a soil analysis on a plot of land, a scientist wants to determine the ammonium content…
A: Given data, Mass of soil sample = 5.045g Volume of solution = 0.500L Mass of precipitate using 125mL…
Q: Calculate for the equilibrium or solubility constant of the dissolution of 0.065 m M2SO4 with th…
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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 bottle containing an alkaline earth chloride was removed due to uncareful handling. The sample…
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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: 4. The maximum value of n in [Cu(EN),,J for a Cu2+-EN solution is the key to a gravimetric method…
A: Coordination compounds are formed by the coordinate bonding of central metal and ligand. In this…
Q: dissolved and diluted to 300 mL with water. A 20 mL aliquot was A 15.00 g sample containing mixed…
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Q: A solid that reappears from the solution is called sublimate O residue immiscible O crystal
A: Sublimate is the solid which has been sublimed. It means solid substance changed to vapour state.…
Q: Which among these is/are properties for the type of precipitate required in gravimetric analysis?…
A: The precipitate in gravimetric analysis should be Known composition and Large particles (…
Q: A solution was prepared by mixing 4.00mL of 2.00 x 10-3 M Fe(NO3)3 and 3.00mL of 5.00 x 10-3 M NaSCN…
A: The balanced equilibrium reaction is: Fe3+(aq) + SCN-(aq) ⇌ FeSCN2+(aq) ; Kc = 148.4575 The average…
Q: A 100mLSolution containing 0.145g of NiCl2 was supplied in the lab. Students were advised to use 5mL…
A: The density of solution = 1g/mL Mass of precipitate = 0.0291 g and 0.0353 g A 100mLSolution…
Q: Which is a wrong statement? O a. Washing the precipitate, removes absorbed impurities O b. In…
A: option a is incorrect as while washing only the adsorbed impurity are washed not absorbed option b,…
Q: Evaluate
A: Fluoride ions serve as the limiting reagent in the chemical reaction. Two moles of fluoride ions…
Q: M is a cation which exists as a nitrate compound in an aqueous solution. Part of this solution is…
A: A question based on qualitative analysis of cation that is to be accomplished.
Q: When a sample of the aqueous layer with a volume of 13.13 mL is collected, it 2- requires 20.69 mL…
A: Solution: Given: The reaction has a 2:1 mole ratio of thiosulfate(S2O32-) to iodine(I2) The…
Q: The possible reason for the ignition of gravimetric precipitate is I. for its mass to be lower II.…
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Q: To prevent inclusion from occurring during precipitation, the technique to follow is I. fiter…
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Q: A mixture consisting of 15 mole % Phenol in water is to batch distilled at 260 torr, what fraction…
A:
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: The weight of 7 ml of vinegar sample was 7.99 g, was required 31.0 ml of 0.3 M sodium hydroxide…
A: Now, the chemical reaction taking place is- CH3COOH + NaOH→CH3COONa + H2O Thus, 1 mole of acetic…
Q: In the analysis of ammonium ferrous sulphate sample for the content of Fe use was made of a weighed…
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Q: In gravimetric analysis, co-precipitation occurs alongside with analyte precipitation, resulting in…
A: Distinguish the difference between occlusion andinclusion and compare them using diagrams
Q: A 0.2 g sample of NazC204 consumed 30.92 mL of KMNO4 to reach the faint pink endpoint in the…
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Q: Make an schematic diagram for procedure below: B. %SO3 determination Transfer all precipitate to…
A: We need to make a schematic diagram for the given procedure.
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: Orthophosphate (PO4) in river sediment sample is determined by weighing ammonium phosphomolybdate,…
A: Gravimetric factor (G.F.) is the weight of analyte per unit mass of precipitate. It is the ratio of…
Q: Sources of Error Determine the relationship between the observed/apparent value (EX) VERSUS that of…
A: Determine the relationship between the observed/ apparent value (EX) VERSUS that of the true value…
Q: 1- The mercury present in a sample with a mass equal to 0.8142 g was precipitated with an excess of…
A: Given information, Mass sample of mercury = 0.8142 g Mass of product i.e. Hg5(IO6)2 = 0.4114 g
Q: Determine the relationship between the observed/apparent value (EX) VERSUS that of the true value…
A: 1. Over ignition would cause the degradation of the precipitate.
Q: Sodium chloride is added slowly to a solution that is 0.010 M in Cu*, Ag*, and Au*. Because…
A: The cations Cu+ , Ag+ , Au+ when reacts with sodium chloride then 3 different types of precipitates…
Q: Perform these calculations for nickel(II) carbonate. (a) With what volume of water must a…
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Q: concentration of 0.10 mg/L. The PAC is added to the stream and the mixture subsequently settled in a…
A: The value of Langmuir constant a and b has to be given,
Q: Which one of the following is considered as ideal property of the precipitate in gravimetric…
A: Gravimetric analysis is a method which is used to analyse the amount of an analyte present in a…
Q: precipitation
A: Hello. Since the number of questions which have been posted is more than one, the first question…
Q: etermine the relationship between the observed/apparent value (EX) VERSUS that of the true value…
A: T0 Determine the relationship between the observed/apparent value (EX) VERSUS that of the true value…
Q: (a) Show that the equation AT, = -k;mB gives MB = -k,wg/ (AT,WA), where wg and wa are the masses of…
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Q: To prepare orange chrome dissolve 2g of lead acetate in 25cc of Warm distilled water, add 4cc oF 2…
A: Chrome orange is a mixed oxide with the chemical formula, Pb2CrO5.
Q: Need to find percent yeild and theoretical yeild of: 20 mL of a solution of adipoyl chloride in…
A: %v/v of hexamethylene is not given and is assumed to be 2%v/v. One mole of adipoyl chloride reacts…
Q: A 25.0 ml solution containing acidified Na;C,04 requires 15.0 mL of 0.0500 M KMNO, solution to reach…
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Q: he sulfate in 266.5 mg sample was precipitated as BaSO4 by addition of 27.00 mL of 0.0340 M BaCl2.…
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Q: - A sample of feldspar weighing 1.500g is decomposed, and eventually there is obtained a mixture of…
A: Amount of feldspar = 1.500 g Mixture of NaCl and KCl = 0.1801 g Concentration of AgNO3 =0.08333 N…
Q: concentration and pH of the H2SO4 solution.
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Q: in ethyl acetate (organic) treat with aqueous HCI Aqueous layer Organic layer treat with treat with…
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Q: Anna analyzed arsenic content on a fish purchased from local wet market. According to Food…
A: Arsenic in water often occurs as a contaminant in fishes.
Q: (a) Why is a small amount of MgY2- often added to a water specimen that is to be titrated for…
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- 25 mL of a bleach (NaOCl) sample is diluted to 500 mL. An excessive amount of KI is added to the 20 mL solution taken from here and the I2 released is titrated with 35.5 mL of 0.0409 M NaS2O3. Accordingly, calculate the weight percent by volume of NaOCl in the sample. (Ma(NaOC:74,4 g/mol)136 mL of 0.00015 M Pb(NO3)2 and 234 mL of 0.00028 M Na2SO4 (volumes are additive). Will a percipitate form? Hint: each solution dilutes the other upon mixing.The concentration of an aqueous solution of CaSO4 (Ksp = 7.1 × 10–5) is 8.43 × 10–3 M. Qsp = ___ and this solution is ___.
- The arsenic in a 1.22-g sample of a pesticide was converted toAsO43- by suitable chemical treatment. It was then titratedusing Ag+ to form Ag3AsO4 as a precipitate. (a) What is theoxidation state of As in AsO43-? (b) Name Ag3AsO4 by analogyto the corresponding compound containing phosphorusin place of arsenic. (c) If it took 25.0 mL of 0.102 M Ag+to reach the equivalence point in this titration, what is themass percentage of arsenic in the pesticide?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.(a) I f t he molar solubilit y o f CaF2 at 35 °C i s1.24 x 10-3 mol/L, what is Ksp at this temperature? (b) It isfound that 1.1 x 10-2 g SrF2 dissolves per 100 mL of aqueoussolution at 25 °C. Calculate the solubility product forSrF2. (c) The Ksp of Ba(IO3)2 at 25 °C is 6.0 x 10-10. What isthe molar solubility of Ba(IO3)2?
- The maximum amount of BaSO4 precipitated on mixing 40 mL of 3 M BaCl2 with 100 mL of 1 M H2SO4 is (At-mass of Ba = 137 u)The Ksp of CaSO4 is 4.93× 10–5. Calculate the solubility (in g/L) of CaSO4(s) in 0.250 M Na2SO4(aq) at 25 °CThe mass of K3PO4 needed to prepare 250.0mL of an aqueous solution in which PO4-3 concentration is 0.0550M. The answer is ……………………… How many grams of silver sample is equal to 0.0417 mole of silver The answer is ……………………… When 38.0 mL of 0.1250 M H2SO4 is added to 100 mL of a solution of PbI2, a precipitate of PbSO4 forms. The PbSO4 is then filtered from the solution, dried, and weighed. If the recovered PbSO4 is found to have a mass of 0.0471g, what was the concentration of iodide ions in the original solution The answer is ……………………………… Express 96.342 m using 2 significant figures The answer is ………………………………. The oxidation number of sulfur in (Na2S2O5) is? The answer is ………………………………
- The solutbility constant for Ce(IO3)3 is 3.2x10^-10. What is the Ce3+ concentration in a solution prepared by mixing 50 mL of 0.0450 M Ce3+ with 50 mL of: A.) 0.0450 M IO3- ? B.) 0.0500 M IO3- ?0.5366 g of an KHP sample of unknown purity was massed. The sample was dissolved in approximately 100 mL of distilled, degassed water and indicator was added. The end point was reached after 21.35 mL of 0.09854 M NaOH solution was titrated into the solution. What is the percentage of KHP in the original sample?4.87 Determine the mass of product that will precipitatewhen 50.0 mL 0.135 M Pb(NO3)2 and 50.0 mL of0.250 M KCl are combined.