A10g sample of a substance of unknown molar mass requires 40 mL of standard solution for titration; was found that the percentage purity is exactly 250 times of molarity of titrant, the molar mass of the substance? Select one O a 62.25 O b.62.50 Oc 52.45 od 3125 e 31.50

A10g sample of a substance of unknown molar mass requires 40 mL of standard solution for titration; was found that the percentage purity is exactly 250 times of molarity of titrant, the molar mass of the substance? Select one O a 62.25 O b.62.50 Oc 52.45 od 3125 e 31.50

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter30: Determination Of Iron By Reaction With Permanganate-a Redox Titration

Section: Chapter Questions

Problem 3ASA

See similar textbooks

Related questions

Q: A solution was made by dissolving 9.0g of hydrated aluminium sulphate Al2(SO)3 in 250cm3 of…

A: Molarity is number of moles of solute dissolved per litre of solution.

Q: eringchemistry.com Consider summer class... Inbox (13) - thesym1@g... Class Schedule Listing…

A: The moles of the species will be equivalent to the product of the molarity of the species and the…

Q: A 22.2 mL sample of 0.357 M ammonia, NH3, is titrated with 0.352 M hydroiodic acid. The pH before…

A: Since you have posted unrelated question as per guidelines we can solve only one per session . If…

Q: A. If 365 ppb of Cd was observed, what is its equivalent in %(w/w)? B. A sample of plastic toy was…

A: Since you have asked a question with multiple subparts, we will answer only first 3 subparts for…

Q: n this equation is balanced using

Q: Why does lead dissolves more readily than copper in a pipe feeding a water fountain made of copper…

A: The question is based on the concept of electrochemistry. we have to talk about the reactivity of…

Q: 4. A 2.00 g sample of an iron ore is dissolved in acid and then reduced to Fe²+. It was then…

A: Given data: Mass of iron ore = 2.00g Molarity of KMnO4 = 0.025M Volume used = 47.5 mL Molar mass of…

Q: 25.0 mL aliquots of a 0.106 mol/L Sn2+(aq) solution was used to standardize an acidified potassium…

A: Titrations are carried out in chemical laboratories to discover concentration of unknown solutions…

Q: The concentration of CO in air is determined by passing a known volume of air through a tube that…

A: Given, Volume of air sample = 4.79 L Volume of Na2S2O3 = 7.17 mL Concentration of Na2S2O3 = 0.00329…

Q: A solution containing KCI (74.551 g/mol) is analyzed by the Mohr Method. A 0.8312-g sample is…

A: The volume of AgNO3 required by the sample is 27.99 mL The volume of titrant required to reach the…

Q: A 1.047 g sample of canned tuna was analyzed by the Kjeldahl method; 24.61 mL of 0.1180 M HCl were…

A: Given data contains, Mass of canned tuna is 1.047 g. Volume of HCl is 24.61 mL. Molarity of HCl is…

Q: A silver nitrate solution contains 5.67 g of primary standard AgNO3 (MM = 169.87 g/mol) in 1.00 L.…

Q: nges to this answer. What is the "equivalence point" in a titration? O The point at which the…

Q: In the analysis of a sample for KH2PO4content, a sample weighing 0.3994 g required 18.28 mL of…

Q: A 10 mL aliquot of a sulfuric acid solution requires 28.16 mL of 0.1000 M sodium hydroxide for…

A: To find out what volume of 0.1000 M barium chloride will be required to titrate a second 10 mL…

Q: When 38.0 mL of 0.1250 M H,SO, is added to 100. mL of a solution of PbI,, a precipitate of Pbso̟…

A: Since PbSO4 is lesser soluble than PbI2, a precipitate of PbSO4 is formed when H2SO4 is treated with…

Q: ered items or incomplete statements is followed by answers or by completions of the statement. ered…

A: Question 27: The Quality coordinating office is the quality control department maintain and store…

Q: A 1.00 g sample of an iron ore is dissolved in acid and then reduced to Fe²⁺. It was then titrated…

A: The titration involves: 5Fe2+ +MnO4−+8H+→5Fe3++Mn2++4H2O

Q: A 0.4334 g sample of canned tuna was analyzed by the Kjeldahl method; 24.61 mL of 0.1180 M HCl were…

Q: A compound containing chlorine is titrated with a solution of 0.075 M Ag2SO4. If 0.250 g of the…

Q: A 0.4334 g sample of canned tuna was analyzed by the Kjeldahl method; 24.61 mlLof 0.1180 M HCI were…

Q: What mass of FeSO4.(NH4)2SO4. 6H2O is present in a sample if it is titrated to its equivalence point…

A: Given: Volume of KMnO4 = 4.100 mL Concentration of KMnO4 = 0.100 N mass of FeSO4.(NH4)2SO4.…

Q: remove stains. The H₂O2 in the product can be titrated with the MnO4 under acidic conditions by the…

A: Given data for Q6 Reaction involved : 5H2O2 (aq) + 2MnO4- (aq) + 6H+ (aq) -------> 5O2 (g) +…

Q: Tungsten trioxide (WO,) has a rich yellow color and is often used as a pigment in ceramics and…

Q: 7. An impure sample of NagSO, weighed 1.562 g. A BASO, precipitate from this sample weighed 2.496 g.…

A: Chemical equation: Na2SO4 + BaCl2 ------> BaSO4 + 2NaCl Number of moles of BaSO4 =…

Q: 2.5 g sample of impure mercury (II) oxide, in excess of potassium iodide is being resolved. HgO(k)…

Q: In performing the Alkalinity of Streams and Lakes activity, a student collects the following data.…

Q: A sample of copper oxide weighing 2.013 g is dissolved in acid, the pH adjusted, and excess KI…

Q: A student performed titration of an unknown reducing substance (molar mass 200. g/mol) in a sample…

A: Answer: This question is based on the calculation of molar concentration of unknown sample with the…

Q: Calculate the food coloring concentration in a standard if 3.00 mL of 0.892 %(v/v) stock solution…

A: Given : Concentration of initial solution = 0.892 % (v/v) Volume of initial solution taken = 3.00 mL…

Q: Titration of the I2 (254 g/mol) produced from 0.1142 g of primary-standard KIO3 (214 g/mol) required…

A: Titration is a laboratory method where the volume of a solution of known concentration is used to…

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: A 1.2516 gram sample of a mixture of CaCO3 and Na2SO4 was analyzed by dissolving the sample and…

A: A 1.2516 gram sample of a mixture of CaCO3 and Na2SO4 was analysed by dissolving the sample and…

Q: 2.23 gr sample taken from a bleaching powder is dissolved and completed to 250 ml. Taken from here…

A: Answer:- This question is answered by using the simple concept of stoichiometry using balanced…

Q: Q/ Mohr's method uses the potassium chromate indicator and this indicator makes the equivalent point…

A: The question is based on the concept of titrations. we have been given mass of barium Chloride…

Q: A. calculate the volume of standardized 0.01 M KMNO4(aq). Needed to completely react with ~0.125 g…

A: Calculate the number of moles of potassium ferrioxalate (n) n = Given massMolar massn = 0.125…

Q: A sample weighing 9 g of BaCl2 is dissolved in 700 mL of water, when 50 mL of the sample is titrated…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: Tungsten trioxide (WO,) has a rich yellow color and is often used as a pigment in ceramics and…

A: For balancing in acidic medium, O is balanced by using H2O and H-atom is balanced by addition of H+…

Q: Determine the %w/w of Na2CO3 in a 2.7518 g sample that was titrated by 41.92 mL of 0.6108 M HCl.…

Q: B. How many milliliters of 9.95 M hydrochloric acid solution should be used to prepare 4.00 L of…

Q: A 0.4960 g sample of a CaCO3 (100g/mol) is dissolved in an acidic solution. The calcium is…

Q: A 0.1500 g of salt sample was analyzed for percent chloride (35.45 g/mol) content. The titration of…

A: Concentration (Molarity) of solution can be calculated using the formula, Molarity = Moles of…

Q: the titration ratio in redox reaction depends on O a. number of protons O b. number of electrons O…

A: The addition of electrons or decreases in the oxidation state is known as a reduction reaction and…

Q: A chemist wishes to precipitate yttrium cations out of a 1.00 L solution. if the concentration of in…

A: Here we are required to find the mass of potassium iodate to precipitate yttrium iodate

Q: In titration, one solution is added to another solution until a chemical reaction between the…

A: The balanced chemical equation for the reaction between the given acid and base is shown below.…

Q: A 0.8040-g sample of an iron ore is dissolved in acid. The iron is then reduced to Fe2+ and titrated…

A: Mass of iron ore = 0.8040 g Volume of KMnO4 solution = 47.22 ml Molarity of KMnO4 solution = 0.02242…

Q: A mined alloy sample weighing 2.0840 g is dissolved in minimal amounts of concentrated HNO3 before…

A: Here we have to determine the percentage of Ag present in alloy in the following volumetric…

Q: electiolyte. 65. Twenty-five milliliters of a solution (d = 1.107 g/mL) containing 15.25% by mass of…

A: (a) The reaction of barium chloride with sulfuric acid is, BaCl2(aq) + H2SO4(aq) → BaSO4(s) +…

Question

A10g sample of a substance of unknown molar mass requires 40 mL of standard solution
for titration; was found that the percentage purity is exactly 250 times of molarity of titrant,
the molar mass of the substance?
Select one:
O a 62.25
O b. 62.50
O c 5245
Od 31.25
O e 31.50

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

A sample of solid calcium hydroxide, Ca(OH)2, is allowed to stand in water until a saturated solution is formed. A titration of 75.00 mL of this solution with 5.00102M HCl requires 36.6 mL of the acid to reach the end point. Ca(OH)2(aq)+2HCl(aq)CaCl2(aq)+2H2O(l) What is the molarity?
The calcium ions in human blood serum are necessary for coagulation (Figure 15.5). Potassium oxalate, K2C2O4, is used as an anticoagulant when a blood sample is drawn for laboratory tests because it removes the calcium as a precipitate of CaC2O4H2O. It is necessary to remove all but 1.0% of the Ca2+ in serum in order to prevent coagulation. If normal blood serum with a buffered pH of 7.40 contains 9.5 mg of Ca2+ per 100 mL of serum, what mass of K2C2O4 is required to prevent the coagulation of a 10 mL blood sample that is 55% serum by volume? (All volumes are accurate to two significant figures. Note that the volume of serum in a 10-mL blood sample is 5.5 mL. Assume that the KSp value for CaC2O4 in serum is the same as in water.) Figure 15.5 Anticoagulants can be added to blood that will combine with the Ca2+ ions in blood serum and prevent the blood from clotting. (credit: modification of work by Neeta Lind)
In Exercise 12.49, what is the allowed concentration of AgCl in g per 100 g of water? The Safe Drinking Water Act of 1974 established the maximum permitted concentration of silver ion at 0.05 ppm. What is the concentration of Ag+ in parts per million in a saturated solution of AgCl? (NOTE: 1 ppm = 1 mgofsolute/L of solution.)
A solution contains 0.018 mole each of I, Br, and Cl. When the solution is mixed with 200. mL of 0.24 M AgNO3, what mass of AgCl(s) precipitates out, and what is [Ag+]? Assume no volume change. AgI:Ksp=1.51016AgBr:Ksp=5.01013AgCl:Ksp=1.61010
An acid is titrated with NaOH. The following beakers are illustrations of the contents of the beaker at various times during the titration. These are presented out of order. Note: Counter-ions and water molecules have been omitted from the illustrations for clarity. (a) (b) (c) (d) (e) a. Is the acid a weak or strong acid? How can you tell? b. Arrange the beakers in order of what the contents would look like as the titration progresses. c. For which beaker would pH = pKa? Explain your answer. d. Which beaker represents the equivalence point of the titration? Explain your answer. e. For which beaker would the Ka value for the acid not be necessary to determine the pH? Explain your answer.
Calculate the solubility (in grams per liter) of silver chloride in the following. (a) pure water (b) 0.025 M BaCl2 (c) 0.17 M AgNO3
Both AgCl and Agl dissolve in NH3.. (a) What mass of AgI dissolves in 1.0 L of 1.0 M NH3?. (b) VNhat mass of AgCl dissolves in 1.0 L of 1.0 M NH3?
68. Aluminum ion may be precipitated from aqueous solution by addition of hydroxide ion, forming Al(OH)3. A large excess of hydroxide ion must not be added, however, because the precipitate of Al(OH)3 will redissolve as a soluble compound containing aluminum ions and hydroxide ions begins to form. How many grains of solid NaOH should be added to 10.0 mL of 0.250 M A1Cl3 to just precipitate all the aluminum?