The sulfur from 4.00g steel is evolved as dihydrogen sulfide gas and titrated with 1.60 mL of 0.050ON iodine solution. What volume of iodate- iodide solution containing 10.Ommol KIO3 and 50g Kl per liter would be required to titrate H2S from 5.00g of the steel?
Q: 2.) Determine the freezing point of benzene (78.11 g/mol) at 100 atm if the normal freezing point is…
A: Given,Normal freezing point of benzene = 5.5 °CEnthalpy of fusion for benzene =9.937 KJ/molDensity…
Q: A 2.036 g of copper (II) salt was dissolved in a 250 mL volumetric flask. A 25 mL aliquot of the…
A:
Q: sin COS dr
A:
Q: 3.00
A: See explanation
Q: ओोण्ए अर कीलबील विगताग्यय ०ी "e १raत्तपतर क ते पक हि जेकव्यी बठार निठकरत कि ककर गण्लंमू begप वेनnय…
A:
Q: N22) + Oz) > 2NO) 2NO( + O26) → 2NO2() 2N20 → 2N2) + 02) use Hess's law to calculate AH for the…
A: The ∆H can be calculated as follows
Q: 3) A company needs to verify the amount of nitrogen in their new "QuikGreen" fertilizer product. To…
A: Moles HCl = 0.989 M x .05 L = 0.05 moles Moles of NaOH = 0.250 M x (11.74 /1000) L = 0.003 Moles…
Q: Determine the enthalpy change when 250g of 20.3°C water was placed into a calorimeter. 14.90g of…
A: Given, The enthalpy change when 250g of 20.3°C water was placed into a calorimeter. 14.90g of…
Q: A 24.84 mL aliquot of a weak acid has a concentration of .58 M. It will be titrated with .32 M NaOH,…
A: We have to predict the pH of the solution.
Q: Chemistry written by hand. Calculate the concentration of F- using M1V1=M2V2 if 0.027g of NaF…
A: Given the mass of NaF taken = 0.027 g Volume of the solution prepared = 250.00 mL
Q: A solution is prepared at 28°C and its concentration is expressed in three different units: percent…
A: Concentration is the amount of solute which can be dissolved in specific amount of solvent or…
Q: For the frame shown below draw the influence lines for Ey, Fy, VC and MC using the equilibrium…
A: below diagram is drawn
Q: A chemist wants to measure the rate of the following reaction: 2CIO2 (ag) + 20H" (ag) ----> CIO3…
A: Answer: When, reactants in the given chemical equation, forms the product , that is called as…
Q: 9. The rotational spectrum of HCN is in far-infrared region, one part is 2.96 cm", 5.92 cm*, 8.87…
A:
Q: 1. Silver chlorate is decomposed with heat to give silver chloride and oxygen gas. 2. Chromium metal…
A: Balanced chemical equation is:
Q: Would you increase or decrease the pressure (via a volume change) of each of the following reaction…
A: Pressure is directly proportional to the number of moles.when pressure decreases then volume…
Q: Identity the intermolecular attentions which exists in each of the following. a. N2 b.H2O c. NH3 d.…
A: See explanation
Q: which etement would have कह षननना ०कमीद्वपहळंदे of LAr] 3 d2for itd 34 ion ņ Enter the element…
A:
Q: Write the correct chemical equation for the chlorination of nitrobenzene and give the name of the…
A:
Q: Table 1 Synthesis Table for synthesis of p-(acetylamino)benzoic acid Density (g/mL) Mass (g)…
A:
Q: What is the pH of a solution that has a 1:4 ratio of acetate ion to acetic acid? pKa acetic acid =…
A: Given pKa = 4.75 acetate ion to acetic acid = 1/4 It is Acidic buffer, pH = pKa + log([acetate…
Q: 5. Caleulate the 14Nd/144Nd ratio of a basalt after it has interacted with seawater, given the…
A: The solution of the given question is
Q: व- मोर कपलप्पछ वक्तर्व पक्चनेट एon हुगफव ठिठर एवटक fottowwing Cog-- १०५ बकत स्टत्व) Nog
A:
Q: Can this happen: OH Natt
A:
Q: Isotonic saline solution has a mass % NaCl concentration of 0.900%. Assuming its density is 1.00…
A:
Q: The Van't Hoff equation estimates the Ws of a solution. True O False
A: Applications of the an't Hoff equation
Q: . A galvanic cell has two electrodes. Which statement below is correct? A) Oxidation takes place at…
A: 1.The cell which convert chemical energy into electric energy is known as galvanic cell . 2.It…
Q: What is the connection between Hess's law and the fact that enthalphy is a state function?
A: Chemical thermodynamics is branch of chemistry in which we deal amount of heat evolved or absorbed…
Q: Consider the following substances and their polarities: A - nonpolar, B - nonpolar, C- polar, D -…
A: Given that A-non-polar; B-non-polar; C-polar; D-polar.
Q: A galvanic cell has two electrodes. Which statement below is correct? A) Oxidation takes place at…
A: Given, A galvanic cell has two electrodes. The correct statement from below is:
Q: Z.
A:
Q: Practice Exercise Exactly 100 mL of 0.10 M nitrous acid (HNO,) are titrated with a 0.10 M NaOH…
A: Here 100 ml of 0.1 M HNO2 is titrated 0.1 M NaOH solution. We have to determine pH at following…
Q: Draw structural formulas for three isomer of C,H,N, and classify them as primary, secondary, or…
A: When only one hydrogen is replaced from NH3 with an alkyl chain then it is called as primary amine.…
Q: Determine the freezing point and boiling point of the following solutions: a. 10 g Nacl (MM= 58.5…
A: Given, a) 10 g of NaCl (MM= 58.5 g/mol) in 500 g of water the freezing point and boiling point of…
Q: Write the equations for the reactions of p-dichlorobenzene a. Hydrogenation of p-dichlorobenzene b.…
A: Chlorine being Electrondonating group is making ortho para position more reactive .
Q: The latent heat of vaporization of water at 100 oC is 539 kcal/kg. Calculate the boiling point of…
A: The boiling point of water can be determined by the Clausius-Calyperon equation. It can be given as:…
Q: A weak oxidizing agent used for the determination of strong reductants O potassium dichromate O…
A: A question based on redox reaction that is to be accomplished.
Q: Consider the following electrochemical cell: Pt|H2(B,p°)|HCI(aq,b)|Hg.Cla(s)| Hg() The potential of…
A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…
Q: Discuss the correct method for conditioning, then correctly filling a buret to be used in conducting…
A: Interpretation- We have to discuss the correct method for conditioning then correctly filling a…
Q: Refer to the phase diagram below, and describe the phase changes (and the temperatures at which they…
A: The phase diagram denotes change of the states with respect to corresponding parameters.
Q: Name the following organic compounds using the IUPAC system. [K: /10] 1. CH,CH,CH, - N - CH, CH, 2.…
A: This is the question of IUPAC nomenclature.
Q: CH;I (CH3);S I
A:
Q: The vapor pressure of mercury at 25 °C is 1.85 mmHg. Calculate the vapor pressure in atm and torr.…
A: Convert mmHg to atm and torr-
Q: 1. Provide the IUPAC name of the following: CI Br
A:
Q: Calculate the pI of this peptide. Calculate the net charge of this peptide at pH 2, pH 7, and pH 11.
A:
Q: Which of the following species would be expected to have chemical properties most similar to those…
A: See explanation
Q: 1. Nitrogen Gas 2. Oxygen Gas 3. Fluorine Gas look for its critical parameters and calculate its…
A:
Q: Use the model kits to build a model of butanal. Oxidize your model to form a carboxylic acid…
A: To convert the butanal to carboxylic acid ,we have to use the string oxidizing agent The oxidizing…
Q: Br Br Br II II IV
A: order of reactivity of alkyl halides in SN2 reactions is: primary alkyl halide>secondry alkyl…
Q: Your pure water boils at 100.00 C. You add some sugar into it and now it boils at 101.20C. What is…
A: Given, Boiling point of pure water, Tb° = 100.00 °C Boiling point of solution, Tb = 101.20 °C Kb…
Step by step
Solved in 3 steps with 3 images
- A 3.25 g sample of an iron-containing mineral was dissolved in an acid medium and calibrated to 500 mL. A 25.00 mL aliquot was titrated with 0.0025 M KMnO4 spending a volume of 9.32 mL. Subsequently, a 25.00 mL aliquot was passed through a Walden reducer to later titrate it with the same permanganate solution, using a volume of 14.15 mL for the titration. Determine the percentage of Fe(III) in the sample and report it as % Fe2O3(a) What is the percentage of MnO2 in a pyrolusite ore if a sample weighing 0.4000g is treated with 0.6000g of pure H2C2O4•2H2O and dilute H2SO4 and after reduction has taken place (MnO2 + H2C2O4 + 2H+→ Mn2++ 2CO2 + 2H2O), the excess oxalic acid requires 26.26ml of 0.1000N KMnO4 for titration? (b) If pure As2O3 were used instead of oxalic acid, how many grams would be required in order for the other numerical data to remain the same?(a) What is the percentage of MnO2 in a pyrolusite ore if a sample weighing 0.4000 g is treated with a 0.6000 g of pure H2C2O4.2H20 and dilute H2SO4 and after reduction has taken place (MnO2 + H2C2O4 + 2H+ Mn2+ + 2CO2 + 2H2O), the excess oxalic acid requires 26.26 mL of 0.1000 N KMNO4 for titration? (b) If pure As2O3 were used instead of oxalic acid, how many grams would be required in order for the other numerical data to remain the same?
- The amount of iron in a meteorite is determined by a redox titration using KMnO4 as the titrant. A 0.4185-g sample is dissolved in acid and the liberated Fe3+ quantitatively reduced to Fe2+ using a Walden reductor. Titrating with 0.02500 M KMnO4 requires 41.27 mL to reach the end point.(a) Determine the %w/w Fe2O3 (MW = 159.69 g/mol) in the sample of meteorite.(b) Determine the %w/w Fe3O4 (MW = 231.533 g/mol) in the sample of meteorite.A sample of pyrolusite weighing 0.6000 g is dissolved in a solution containing 5.00mL of 6.00 N H2SO4 and 0.900 g of H2C2O4.2H2O. The excess oxalate then requires24.00 mL of KMnO4 solution for titration. If each mL of the KMnO4 will oxidize the Fe(II)in 0.03058 g FeSO4.7H2O, what is the oxidizing power of the sample in terms of MnO2?84.33%What is the percentage of Nickel in an ore if, when analyzed by the cyanide method, 20.00mL of KCN solution (containing 1.00mmol of AgNO3 per milliliter) are used? Wt of sample used = 0.2500g
- 35.A sample of pyrolusite weighs 0.5000 g. To this is added 0.6674 g of As2O3 and dilute acid. After solvent action has ceased, the excess three-valent arsenic is titrated with 45.00 mL of 0.1000 N KMnO4. Calculate the oxidizing power of the pyrolusite in terms of percemtage MnO2. 36. A solution of Iodinebia such concentration that 20.0 mL are required to titrate the antimony in a 0.100 g sample containing 84.93% Sb2S3(339.7 g/mol). What is the value of 1.00 mL of this Iodine in terms of grams sulfue in tiration?A 0.5745 g sample of an alloy containing principally bismuth and lead is dissolved in nitric acid and diluted to 250.0 mL in a volumetric flask. A 50.00 mL aliquot is withdrawn, the pH adjusted to 1.5, and the bismuth titrated with 30.26 mL of 0.01024 M EDTA. The pH of the solution is then increased to 5.0 and the lead titrated with 20.42 mL of the same EDTA solution. Calculate the percentages of lead and bismuth in the alloy.A 1.000 g sample containing chlorides, iodides and inert materials was treated with dilute nitric acid followed by AgNO3. A precipitate of AgCl (143.32) and AgI (234.77) was produced and weighs 0.9238 g. On heating in a current of Cl2, the AgI is converted to AgCl, and the resulting product weighs 0.7238 g. Find the percentage of a) NaI (149.89) and b) NaCl (58.44) in the sample
- You want to separate Cd2* and Fe2+ (initial concentration 103 mol/L) by means ofprecipitation of the corresponding sulphides. Is therea pH range in which one of the two metals is precipitated quantitatively(concentration in the solution less than or equal to 10" mol/L) is precipitatedwhile the other is still completely_in solution?Calculate and name this pH range where pH values below 0are set equal to O. Illustrate the situation graphically by drawingThe key reaction (unbalanced) in the manufacture of syn-thetic cryolite for aluminum electrolysis is HF(g)+ Al(OH)₃(s) +NaOH(aq) →Na₃AlF₆(aq) +H₂O(l) Assuming a 95.6% yield of dried, crystallized product, whatmass (in kg) of cryolite can be obtained from the reaction of 365 kg of Al(OH)₃, 1.20 m3of 50.0% by mass aqueous NaOH (d=1.53 g/mL), and 265 m³ of gaseous HF at 305 kPa and 91.5°C? (Assume that the ideal gas law holds.)The fat in a 1.821 g sample of potato chips is extracted with supercritical CO2. After extraction, the residue weighs 1.139 g. What is the fat content (% w/w) of the potato chips?