Suppose that a small portion of the sulfate precipitated as lead sulfate rather than as barium sulfate. How would this change the result of the analysis?

Q: How many moles of Cl- ions must be added to precipitate all of the silver ions present in 50.0 mL of…

A: 1 mol of Ci react with 1 mol Agno3 to produce 1 mol of Agci (Precipate ) means No of mols of Ci…

Q: A river water was tested to determine the presence of group 1 cation. A white precipitate was…

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Q: How many moles of Cl ions must be added to precipitate all of the silver ions present in 50.0 mL of…

A: Volume of AgNO3 = 50 mL = 0.050 L Molarity of AgNO3 = 0.100 M = 0.100 mol L -1

Q: ake was given an unknown solution thought to contain Pb²⁺ and/or Ba²⁺ and asked to perform chemical…

A: Jake concluded that the white precipitate formed in the solution after the addition of sulphate ions…

Q: 250 mg of a sample of minium (Pb3O4) is solubilized and weighed as PbSO4 by going through the…

A: A solution consists of solute and solvent. A solute is defined as the component that is present in…

Q: In the titration calculation, moles of KOH were calculated from the known molarity and measured…

A: Given : moles of succinic acid has been calculated in the procedure  To find : mass of Succinic acid…

Q: O4 and the formation of the brown precipitate manganese dioxide, MnO2. OH + 2KMNO4 + 4H2O + 2MNO2 +…

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Q: 1. Why do the preliminary tests not help in the identification of nitrate ion? 2. A student analyzes…

A: Qualitative analysis of inorganic salts indicates the identification of cations and anions present…

Q: Assuming that the uncertainty in the readings does not change, why is it not acceptable to base…

A: Reducing uncertainty in titration is important to determine the desired concentration or the…

Q: A 10.00 mL sample of Y(OH)2 was titrated to the stoichiometric point with 14.50 mL of 0.2345 M H2X.…

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Q: 2. A student analyzes a sample using the preliminary tests and finds that no precipitate is obtained…

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Q: Why is it all right to use a wet flask or to use water during the titration?

A: It has to be clean and dry so you have the right amount of solution taken out from you flask to be…

Q: A. Write the balanced net ionic equation for the precipitation of manganese(II) hydroxide from…

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Q: The substance to be analyzed – is white, highly soluble in water salt. Interaction with concentrated…

A: Which chemical compound matches with the given properties has to be identified.

Q: e) If the amount of AgCl precipitate collected after ignition is 0.6156 g, calculate the percent of…

A: The balanced chemical equation between NaCl and AgNO3 is represented as follows: NaCl+AgNO3 ↔…

Q: A series of sulfate sample is to be analyzed by precipitation as BaSO4. If it is known that the…

A: Given: In the given problem, sulfate sample is analyzed by precipitation as . Balanced equation is…

Q: A. Write the balanced net ionic equation for the precipitation of nickel(II) phosphate from aqueous…

A: Concept: Precipitation reaction: In a precipitation reaction the formation of an insoluble salt take…

Q: Write the formulas for the precipitate when an excess of NH4OH is mix with thioacetamide and a…

A: The cations, such as Fe2+, Cr3+, Mn2+, and Zn2+, precipitate as sulfide and hydroxide when excess…

Q: If a 1.25 g sample of magnesium oxide (98.9%) were titrated with 70 ml of 1.04 N of sulfuric acid,…

A: Mass of magnesium oxide = (98.9/100) × 1.25 g = 1.236g Moles of magnesium oxide =…

Q: Analyze the table of some common inorganic precipitating agents and answer the following questions:…

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Q: 6. Why do we need to precipitate from a hot solution? 7. Why is the precipitating agent added all at…

A: Since you have posted multiple questions, the answer for first two question is given below. Kindly…

Q: Why is an Erlenmeyer flask preferred over a beaker when performing a titration?

A: Erlenmeyer flask has tapered sides thus it makes more accurate titration than that is from breaker .…

Q: A 50.00 mL sample containing La3+ was titrated with sodium oxalate to precipitate La,(C204)3, which…

A: Molarity is defined as “the mole of the solute per unit volume of the solution”. It is represented…

Q: Part B: Sulfate. A 1.109 g sample of a material known to contain sulfate is dissolved and the…

A: A sample containing sulfate ion is precipitated with Pb(II) ions as PbSO4.The weight of the…

Q: Based on the solubility observations, would you except potassium and bromide to form a precipitate,…

A: Solubility is defined as the maximum amount of solute dissolved in a given amount of solvent at a…

Q: When the black precipitate is dissolved in sulfuric acid, the resulting aqua blue solution is

A: Mostly all sulfides such as PbS, Bi2S3, CuS, MnS, HgS, Ag2S, NiS, CoS are black in color.

Q: A 523.1mg sample of impure KBr is treated with excess AgNO3 and 814.5mg AgBr is obtained. What is…

A: Percentage purity = (mass of the pure chemical / total mass of the sample) x 100%

Q: Suggest a reason why it is desirable to use an excess of barium ion in the precipitation.

A: There is am advantage of adding a access amounts of barium ions in the precipitation

Q: explain the principles of acid-base titration

A: Acid - base titration is a process of quantitative analysis of determining the concentration…

Q: Find the precipitate reaction to determine the % purity of the CaBr2 in a very old and crusty bottle…

A: Reaction taking place:  3CaBr2 + 2Na3PO4 → 6NaBr + Ca3(PO4)2 In general 3 moles of CaBr2 react with…

Q: 3) Now there are three test tubes without labels and the solutions are Na SO4, NA3PO4, and Na2CO3.…

A: We have three equations as follows 1- Reaction of Na2SO4 with Ba(NO3)2 Na2SO4 + Ba(NO3)2→NaNO3…

Q: Develop a sequential analysis to test for the presence of the following sets of ions. The answer you…

A: The question is based on the concept of qualitative analysis. We will distinguish the pair of Ions…

Q: What is the type of precipitation when determining the chloride ion and why? And what type of…

A: Precipitation: It is a method of converting a chemical compound into a solid form from the liquid…

Q: Why is it normal to add a slight excess of silver nitrate solution when precipitating chloride ion?

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Q: Write all the reactions involved in the Mohr's method, if an unknown solution containing chloride…

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Q: A 0.2850 g sample of lye ( impure NaOH) was weighed out and dissolved in water, 44.54 mL of 0.150 N…

A: The given information is: Weight of sample of lye = 0.2850 g Volume of HCl = 44.54 ml Normality of…

Q: When 25.00 mL of 0.695 M HCl reacts with an excess of silver nitrate. How many grams of precipitate…

A: The balanced chemical reaction is, AgNO3 + HCl → HNO3 + AgCl Here, AgCl is a precipitate. So,…

Q: We have 4 test tubes filled with aqueous solution, one of which is definitely yellow. Use the…

A: A question based on qualitative analysis that is to be accomplished.

Q: Why was HCl added to the unknown sulfate solution before adding the BaCl2 solution?

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

Q: In Thiosulfate (Redox Titration), why is there a need for a white background when titrating? the…

A: For the standardization of sodium thiosulfate  potassium dichromate and potassium iodide solution is…

Q: A sample barium halide (Bax2 2H20) weighing 0.3567 g was precipitated as BasO4. Determine the…

A: Mass of BaSO4 = 0.3732 g  Mass of reactant BaX2 .2H2O = 0.3567 g We need to determine X.

Q: Bang-O is known to be an organic pesticide that contains 10.45% Cl. A 0.827 g sample containing the…

A: Here we are required to find the percentage of pesticide in the sample

Q: How will you compare the precipitates of the solution containing Ag+ and Pb+2 ions?

A: Both Ag+  & Pb2+ are group I cation, they are precipitated or identified using 6M HCl solution,…

Q: Gravimetric analysis of chloride salts. What is gravimetric analysis? How is this theory applied in…

A: Precipitation gravimetry is a quantitative analytical technique which is used for the determination…

Q: In the laboratory you are given the task of separating Ca* and Ag* ions in aqueous solution. For…

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Q: What would happen to the concentration of a solution if the titration was stopped after the first…

A: A quantitative analysis where the amount of substance is calculated by measuring the volume is…

Q: A precipitate that could be formed from soft acids is silver chloride. True or false?

A: Given statement is :  A precipitate that could be formed from soft acids is silver chloride  Whether…

Q: What is the type of precipitation when determining the chloride ion and why? And what type of…

A: This method determine the chloride Ion concentration of a solution by gravimetric analysis a…