The thiourea in a 1.563 g sample.of an organic material wasextracted into a dilute H2SO4 solution and titrated with36.43 mL of o.o09284 M Hg²* via the reaction below.4(NH2)½CS + Hg2 - [(NH2),CS],Hg²•What is the percentage of (NH2)2CS (Molar Mass = 76.12g/mol) in the sample?

Given, Mass of thiourea = 1.563 g Molarity of Hg2+ = 0.009284 M Volume of Hg2+ = 36.43 mL Given…

The thiourea in a 1.563 g sample of an organic material was extracted into a dilute H2SO4 solution and titrated with 36.43 mL of o.o09284 M Hg2 via the reaction below. + Hg2 [(NH2)2CS]Hg2+ What is the percentage of (NH2)2CS (Molar Mass = 76.12 g/mol) in the sample? %3D

The thiourea in a 1.563 g sample of an organic material was extracted into a dilute H2SO4 solution and titrated with 36.43 mL of o.o09284 M Hg2 via the reaction below. + Hg2 [(NH2)2CS]Hg2+ What is the percentage of (NH2)2CS (Molar Mass = 76.12 g/mol) in the sample? %3D

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter12: Gravimetric Methods Of Analysis

Section: Chapter Questions

Problem 12.20QAP

See similar textbooks

Related questions

Q: this question has 4 parts to it. For parts a-c, there can be more than one answer based on the molec...

Q: 1. 2-butanol is oxidized. Suggest a method a chemist could use to separate the oxidation product fro...

A: We have find out method of separation.

Q: 8. Dimethylamine (CH;),NH is a weak base with a pKa of 11.0 a. Calculate the pH of a solution of dim...

Q: 7. Rank the following acid-base conjugate pairs by order of increasing strength of the acid? Their p...

Q: What is the compound of this IR Spectrum

A: A question based on IR spectroscopy that is to be accomplished.

Q: The pH of a solution containing 0.40 M CH,COOH and 0.20 M CH.COONa is For the acid, Ka =1.8X10 Answe...

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are...

Q: The rate constant k1 = 3.52 x 10^-7 L/mol a at 555K. The Ea = 186 kJ/mol. What is the rate constant ...

A: Arrhenius equation: Arrhenius equation give the relationship between the activation energy and the r...

Q: If 24.5 mL of a 0.145 M NaOH solution are needed to neutralize 0.520 g of an unknown monoprotic acid...

A: We have to predict the molar mass of acid

Q: 6. Consider the following scheme of reactions. Reaction 1 Reaction 2 CH3CH2 CN H2C=CH2 ethene CH3CH2...

Q: H. H2N-H + OH + H-CH3 + H-OCH, - H (ii) OCH2 + H20 (ii) OCH2 CH3 + но-сн

Q: Draw structures for the following: (a) cis and trans isomers having the formula C 4 H 8 (b) 2° a...

Q: An antithrombotic drug: A H3C NH C N. NH2 HO E Choose TRUE if the statement is valid and FALSE if it...

A: 1) True , it can donate proton so it is acidic functional group 2) False , C is less basic than A be...

Q: C For the mechanism step below, draw curved arrows to show electron reorganization. Arrow-pushing In...

Q: H3C-CH2-CH2–CH2-HÇ-CH3 H;C-Ñ–CH;-CH;–CH3 what is the root? what is the prefix? what is the suffix?

A: given is a structure and we have to tell its name

Q: A 160.0 mL solution of 3.041 M strontium nitrate is mixed with 205.0 mL of a 3.340 M sodium fluoride...

A: Given reaction is Sr(NO3)2 + 2 ...

Q: Determine the total pressure exerted by a mixture containing two gases if the partial pressure of on...

A: Given that, P1 = 70 atm P2= 30 atm PT= ?

Q: Mixing 50 ml of HCI ( 2.0 M) with 50 ml of NaOH ( 2.0 M ) raises the temperature of the calorimeter ...

Q: Suhe you dissolve 0.235 g of the weak acid benoic acd, CyCo, in enough water to make 1.00 10 m of so...

Q: rough closest packed planes. In body-centered cubic (bcc) the closest packed plane is {110} and {111...

Q: 1. The structures of six organic compounds are shown below. H =H H2N (b) (c) `NH2 H2N ОН (d) (e) (f)...

Q: Predict whether or not these substances will mix. Justify and expand your answer. 1. Paint thinner a...

A: Determination of polarity nature of both the compounds in the given pair is quite necessary to check...

Q: 1. What is the general formula for saturated hydrocarbons? 2. How is the formula changed if one C=C...

A: Alkanes are saturated hydrocarbon whereas alkene and alkyne are unsaturated hydrocarbon. Weight of a...

Q: A 50.0 mL solution of 0.179 M KOH is titrated with 0.358 M HCI. Calculate the pH of the solution aft...

Q: What is the cobalt(II) ion concentration in a solution prepared by mixing 351 mL of 0.372 M cobalt(I...

A: The balanced equation for the reaction is Co+2 (aq) + 2 OH– (aq) -----------> Co(OH)2 (s) Numbe...

Q: Which of the following has the greatest molar entropy? All have the same O F2 () O F2 (s) O F2 (s)

A: Entropy: Entropy can be defined as the measurement of randomness or disorderness in the thermodynami...

Q: Calculate AH° for the following reaction 3 Fe2O3(3) + CO(g) → 2 Fe3O4(s) + CO2(g). Species |AH"f, k ...

A: Calculate change in enthalpy of the given reaction---

Q: 1) Determine the order of the reaction and the rate constant. 2) What is the half-life of this react...

A: Answer: In this question with the help of given data table we have find out the order of reaction an...

Q: Given a oreaction eH4 (8)+ 202°9) - >C०_8) +2 H20CI) C०-C8) +2H20C cq\culade मe णork (न k১)whn2.20 m...

A: Given : Number of moles = 2.20 moles

Q: Refer to the chemical reaction below: BaCrOs) Ba + CrO 10 Ksp = 2.10 x 10 Calculate the molar solubi...

A: Given : Ksp = 2.10 x 10-10

Q: If a sample of helium gas has a volume of 120 mL and a pressure of 850 mmHg, what is the new volume ...

Q: Arrange the salts by their molar solubility in water. each salt. Most soluble Least soluble Answer B...

Q: What is the pH of a 1.00 x 10^-9 molar solution of MgCl2?

A: The pH of a 1.00 x 10^-9 molar solution of MgCl2 is given below

Q: Name fatty acid h) in the correct notation. You can copy&paste the following model, and replace the ...

A: 8:2 ∆4,6 Here First number 8 represents longest carbon atom chain should contain 8 carbon atoms. Se...

Q: C. C,H,(g) + 30,(g) · 2 CO,(g) + 2 H,0(1) The entropy, ASxn, mol Angas increases. decreases. has lit...

A: Calculate change in mole and sign of entropy --

Q: hich has the least viscosity? O CH3CH20H HOCH2CHOHCH2OH CH3(CH2)3CH3 O CH3(CH2)4CH3 hich has the gre...

A: Since you have posted multiple questions as per the guidelines we can answer only one per session . ...

Q: 1) NANH2 2) benzyl chloride/acetone SH

A: When thiol react with a base, it abstracts the proton and then thiol becomes a very good nucleophile...

Q: Bromination of alkenes is an anti-addition; i.e. the substituents attach to their respective carbons...

A: Here in this case ,we are taking example of bromination of cinnamic acid ,and how much chiral centre...

Q: h. 1) CH;MgBr 2) H2O CN CHO H,O, H* k. H2O, H* CN heat HO но .CI m. CO2H" n. 1. SOCI, HO, 2) CH,ОН, ...

Q: Rank these substances by acidity: 1 = most acidic, 5 = least acidic 4 3.

Q: 2. What is the solubility of Mg(OH), in a 0.55 mol/L solution of KOH if the Ksp of Mg(OH), is 9.0 x1...

A: The solubility of Mg(OH)2 can be calculated as follows

Q: Number of Molecule valence electrons Formal Charge Electron-Group Geometry Molecular Geometry Resona...

A: The table can be filled using the Lewis structures of the given molecules

Q: Spectrum A 2H ΤΗ 2Η 8 7 3 H 8 7 6. 2 4 PPM 3 1

Q: A factory has a solid copper sphere that ne s to be drawn into a wire. The mass of the copper s, nee...

A: According to the mass conservation law when the copper sphere is converted into copper wire the mass...

Q: Which reactions have a positive ASrxn?

Q: balance this redox reaction in acidic solution? Sn^ 2+ (aq) +NO 3 (aq) —> NO (g) +Sn^ 4+ (aq)

Q: Is the ring and coffee cup topologically equivalent? How about a ring and a rubber band, are they to...

A: Please find your solution below : Two or more objects are said to be topologically equivalent if the...

Q: Consider the following reactions and predict the AS°: I. C6H6(s) – C6H6(1) II. 2 SO2(8) + O2(8) → 2 ...

A: We have to predict the change of standard entropy for given reactions.

Q: The mass of lead bromide that is dissolved in 225 mL of a saturated solution is grams.

A: Given: Volume of solution = 225 mL = 0.225 L (since 1 L = 1000...

Q: Give the systematic name of the compound below.

A: We have to predict the name of given compound.

Q: 15. Laboratory analysis of a sample yielded the following data for the combustion of Nickel Ni(s) + ...

A: Given, The combustion reaction: Ni(s) + O2(g) -------> Ni O(s) ...

Question

The thiourea in a 1.563 g sample.of an organic material was
extracted into a dilute H2SO4 solution and titrated with
36.43 mL of o.o09284 M Hg²* via the reaction below.
4(NH2)½CS + Hg2 - [(NH2),CS],Hg²•
What is the percentage of (NH2)2CS (Molar Mass = 76.12
g/mol) in the sample?

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

Step 2

Step 3

Step 4

Step 5

Step by step

Solved in 5 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

An analyst was assigned to work a sample with minerals. This iron-containing sample was analyzed by dissolving a 1.3142g sample in concentrated HCl. The resulting solution was diluted with water and iron (III) was precipitated as the hydrated oxide Fe2O3 xH2O by the addition of HN3. After filtration and washing, the residue was calcined at high temperature to produce 0.5488g of pure Fe2O3 (159.69g / mol). Determine the following:a) the% Fe (55.847 g / mol) and the% Fe3O4 (231.54 g / mol) in the sample.
One litre of a saturated aqueous solution of Ag2SO4 (MW = 311.79 g mol- 1) at 25 °C is evaporated to dryness. 4.844 g of Ag2SO4 residue was produced. What is the solubility product (Ksp)?
A 0.4852g sample of an iron ore was dissolved in acid to the 3+ state, then precipitated as Fe2O3 x H2O. The pp was filtered, washed and calcined to Fe2O3, which gave a weight of 0.2481g. Calculate the Fe % in the sample.
An ore containing Fe3O4 was analyzed by dissolving a 1.5419-g sample in concentrated HCl. HNO3 was then added to oxidize any Fe2+ to Fe3+. The Fe3+ was precipitated as Fe(OH)3 by adding NH3. The precipitate was collected by filtration and was finally heated yielding 0.8525 g of Fe2O3. Report the concentration of Fe3O4 in the sample as %(w/w). (Note: the final answer is said to be 53.4%)
The 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 arsenic in a 1.010 g sample of a pesticide was converted to H3AsO4 by suitable treatment. The acid was then neutralized, and exactly 40.00 mL of 0.06222M AgNO3 was added to precipitate the arsenic quantitatively as Ag3AsO4. The excess Ag in the filtrate and in the washings from theprecipitate was titrated with 10.76 mL of 0.1000MKSCN; the reaction wasAg+ + SCN-→ AgSCN(s) Calculate the percent AsO3 in the sample.
A scientist was tasked to extract Fe from an aqueous suspension that contains 106 g of Fe2O3. The following steps detail the transformation of Fe2O3 (aq) to elemental iron: I. Enough sulfur trioxide gas was bubbled to Fe2O3 aqueous suspension to completely yield ferric sulfate. II. Then, 5.00 M nitric acid was added to ferric sulfate yielding an aqueous solution of ferric nitrate. III. Excess magnesium powder was added to the aqueous solution of ferric nitrate precipitating the solid iron ----- a. Write the balanced chemical reaction and the type of chemical reaction for [I], [II], [III]. Do not forget to indicate the states of the reactants and products (s, l, g).(CHOICES: COMBINATION, SINGLE DISPLACEMENT, DOUBLE DISPLACEMENT) b. What is the final mass of iron? Express final answers in 3 significant figures. c. High-concentration HCl is supposed to be added at the last part of the procedure. Briefly state its purpose.
0.1724g of a mineral containing MnO₂ was dissolved and then treated with excess iodide according to the following unbalanced reaction: MnO2(s) + H+ → Mn²+ + I2 + H₂O The I₂ released was titrated with a solution of Na₂S2O3 0.07320 mol/L, requiring 14.65 mL to reach the point end of degree a) Determine the percentage of MnO₂ in the ore. b) When iodine solutions are used as titrants these are prepared by dissolving 1₂ in concentrated KI. Explain the reason for the need for KI in the preparation of these solutions?
The arsenic in a 1.203-g sample of a pesticide was converted to H3AsO4 by suitable treatment. The acid was then neutralized, and 40.00 mL of 0.05871 M AgNO3 was added to precipitate the arsenic quantitatively as Ag3AsO4. The excess Ag+ in the filtrate and in the washings from the precipitate was titrated with 9.63 mL of 0.1000 M KSCN, and the reaction was. Find the percentage of As2O3 in the sample.
An impure sample of Na3PO3 weighing 0.1 g is dissolved in 35 mL of water. A solution containing 45 mL of 3% w/v HgCl2, 30 mL of 10% w/v sodium acetate, and 10 mL of glacial acetic acid is then prepared. After digesting, filtering, and rinsing the precipitate, 0.2857 g of Hg2Cl2 is obtained. Report the purity of the original sample as % w/w Na3PO3.
A 40-mL vial of a sodium chloride was diluted to a liter with sterile water. The concentration (w/v) of NaCl (MW 58.5) in the finished product was 0.58%. What was the concentration in mEq per mL of the original solution?
A technician is setting up a laboratory to standardise ~0.0200 mol dm–3 KMnO4. What mass of Mohr’s salt [FeSO4(NH4)2SO4·6H2O] would the technician be required to weigh out to produce a 5.00 L solution of Mohr’s salt such that 25.0 cm3 aliquots of the salt would require a titre of 20.0 cm3 to standardise the KMnO4 solution?