0.4545 g CaCO3 was dissolved in HCl and the resulting solution was diluted to 0.25 L. Twenty-five mL aliquot of this solution required 35.2 mL of EDTA upon performing titrimetric analysis. Determine the molarity of EDTA
Q: Describe any non-human sources of error and how they impact the results in this experiment of molar…
A: The non-human sources of error in the molar mass of a volatile liquid are as follows --> (1) -…
Q: Histones are OA. positively charged nucleic acids. B. negative charged amino acids. OC. negatively…
A: Given : statements
Q: Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure H-C-C-H…
A: Lewis Structure is representation of the valence shell electrons in a molecule. It is used to show…
Q: 4) Identify the compound with the standard free energy of formation equal to zero. A) NO(g) B) N2(g)…
A: Standard free energy of formation is the energy which is related to the formation of the molecule or…
Q: What is the change in enthalpy when 1.25 moles 0₂ are reacted with an excess H₂ of according to the…
A: The given balanced thermochemical equation is 2H2(g)+O2(g) →2H2O(l) ∆H =-572 kJ
Q: The following reaction is studied in the laboratory: 3X4 → 12Y8 + 4Z It is determined that at 111…
A: Answer:- This question is answered by using the simple concept of Arrhenius equation which involves…
Q: 1. because of the size of the pores of the filter paper and the small size of the precipitate, some…
A:
Q: a. a. $X $ -Br c. HO d. b. b. u Br OH
A: The names of the organic compounds are given below -
Q: Question 2 Write down the formulae of the ionic compounds that contain the following pairs of ions:…
A: As per bartleby guidelines I answered only first question so please don't mind thanks in advance for…
Q: Which of the following solutions would form a solid upon mixing? A. Li3PO4 and FeI3 B. RbOH and Ba…
A: The formation of solid upon adding the given substance can be predicted with the help of the…
Q: A 135.0-g sample of a metal at 153.0 °C is added to 255.0 g of ethylene glycol (specific heat = 2.43…
A:
Q: F. 1. 2. H3O+ MgCl но.
A: Grignard reagents are the nucleophiles. Grignard reagent is organometallic compound that are carbon…
Q: A sample of argon gas occupies a volume of 9.60 L at 53.0°C and 0.850 atm. If it is desired to…
A:
Q: 4. Circle the monomer(s) used to synthesize Polymer A (Note: there may be more than one answer) H₂C.…
A: Polymer is a class of natural or synthetic substances composed of very large molecules, called…
Q: The gas phase reaction of hydrogen with iodine H₂ + 12 → 2 HI is first order in H₂ and first order…
A:
Q: A student proposes the following Lewis structure for the nitronium [0=N=0]* Assign a formal charge…
A:
Q: (a) Write down the electronic configuration of an atom of the following elements in s, p, d…
A: 1.Al - Atomic No 13 [Al] - [Ne] 3s2² 3p¹ 2. Cl → atomic number 17 [Cl] - [Ne] 3s² 3p⁵ 3. Ca →…
Q: VOS A 10) A soluble salt is added to a liquid with a boiling point of 80°C. What happens to the…
A:
Q: Consider 15 mL of an aqueous solution containing 2.0 g of an organic solute. If the distribution…
A: Given:- Dissociation constant for water and ether= 20 Weight of solute= 2g Volume of ether used for…
Q: ОН H+ OH
A: SN1 Reaction take place.
Q: Hemoglobin, the oxygen carrying compound in blood, has the formula: C₂₉₅₂H₄₆₆₄N₈₁₂O₈₃₂S₈Fe₄ What is…
A:
Q: What is the correct IUPAC name of the following compound?
A: we have to determine the IUPAC name of the given compound
Q: How many meters tall is a student whose height is 54.2 inches? Round your answer to the nearest…
A: “Since you have posted multiple questions, we will provide the solutiononly to the first question as…
Q: What is S° for B in the reaction 3 A → 2 B if ∆S°(rxn) =-275.5 J/mol ･ K? [S° (A) = (205.0 J/mol…
A:
Q: 1.03 2. DMS Click and drag to start drawing a structure.
A: Ozonolysis reaction.
Q: A solution contains 1.02x10-2 M sodium bromide and 9.30x10-3 M potassium iodide. Solid silver…
A: Using solubility product constant values and equilibrium expressions, concentration of iodide ion…
Q: G. excess HI (two products)
A: In presence of excess HI ether cleaves and alkyl halides are formed.
Q: Draw the Lewis structure for the ozone (03) molecule. Be sure to include all resonance structures…
A: According to the octet rule, an element always undergoes changes & tries to gain 8 electrons in…
Q: work and use units throughout your calculations! 5. You wish to make 500. mL of 0.90 M KCl from…
A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…
Q: Draw the alcohol starting material needed to produce the following alkyl chloride under the…
A:
Q: Write the pertinent equations for the stability constant (βn) for the complex formation of [MLn]2+,…
A:
Q: 15) Calculate the AG°₁ AHᵒf (kJ/mol) S°(J/mol K A) +50.8 kJ rxn at 298 K using the following…
A:
Q: 10.116 A series of reactions is carried out in separate containers at a constant volume and a…
A: The Ideal gas equation is PV =nRT P is the pressure T is the temperature in kelvin V is the volume n…
Q: What is the name of this amino acid side chain and it's 3 letter abberivation?
A: the structure of an amino acid side chain is given we have to determine the name of amino acid and…
Q: Calculate Kp for this reaction at 25°C. I₂(g) + Cl₂(g) 2 ICI(g) AG xn=-6.075 kJ/mole
A:
Q: Part C Ni2+ Express your answer as an integer. IVE ΑΣΦ SSSS ? e in the valence d orbit
A: Given -> Ni2+ , Fe3+
Q: The specific heat capacity of liquid mercury is 0.14 J g¹ K-¹. How many joules of heat are needed to…
A: Specific heat capacity is defined as the amount of heat required to raise the temperature of one…
Q: How many moles of C3H (propane) must be reacted according to the following balanced chemical…
A: Heat of combustion is the amount of heat released during the process of combustion or reaction of…
Q: The following initial rate data are for the ozonization of pentene in carbon tetrachloride solution…
A:
Q: Macmillan Learning A sample of an ideal gas has a volume of 2.25 L at 278 K and 1.09 atm. Calculate…
A: Given -> Initial Volume (V1) = 2.25 L Initial temperature (T1) = 278 K Initial pressure (P1)=…
Q: The average molecular speed in a sample of Ar gas at a certain temperature is 442 m/s. The average…
A: Motion of Gas Molecules: A gas is composed of molecules that are in s state of constant random…
Q: For each row in the table below, decide whether the pair of elements will form a molecular or ionic…
A:
Q: An AgNO3 solution was prepared by dissolving 5.25 g of pure AgNO3 (169.87g/mol) in sufficient water…
A:
Q: A mixture of nitrogen and oxygen gases, in a 9.78 L flask at 85 °C, contains 6.45 grams of nitrogen…
A:
Q: d.
A: The given problem is based on the nomenclature of organic compounds.
Q: Differentiate the method used in producing nanomaterials.
A: Nanomaterials are considered as materials which has at least one dimension that measures 100 nm or…
Q: 95. Calculate the molar solubility of calcium hydroxide in a solution buffered at each pH. a. pH = 4…
A:
Q: 31. An unknown metal M is reduced by electrolysis from a solution of M(NO3)3. It took 74.1 s for a…
A: For question number 31. Given :- M----------->M+3 Time= 74.1sec Current ( I) = 2 amp Mass of…
Q: Which of the following intermolecular forces will NH3 : i. London Dispersion Forces Dipole-Dipole…
A: Intermolecular forces are the forces which mediate attraction between molecules in a substance.…
Q: 2) Consider a 12.0 L container filled with Argon (Ar) gas. The pressure of this container is 3.50…
A: Given , Argon (Ar) gas behaves as ideal gas.
0.4545 g CaCO3 was dissolved in HCl and the resulting solution was diluted to 0.25 L. Twenty-five mL aliquot of this solution required 35.2 mL of EDTA upon performing titrimetric analysis. Determine the molarity of EDTA
Step by step
Solved in 2 steps with 2 images
- An EDTA solution was prepared by dissolving approximately 3 grams of Na2H2Y•H2O in sufficient water to give 1 liter of solution. This solution was then standardized against 50.00 mL aliquots of 0.004517 molar Mg2+. An average titration volume of 32.22 mL was required. Determine the molar concentration of EDTA.A 0.7352g sample of ore containing Fe3+, Al3+ and Sr2+ was dissolved and made up to 500.00 mL. The analysis of metals was performed by a chemistry using complexation volumetry. Initially, an aliquot of 50.00 mL had its pH adjusted to 1.0 and titrated with a standard solution of EDTA 0.02145 mol/L, requiring 6.95 mL to reach the end point. Subsequently, another 25.00 mL aliquot was buffered at pH=5 and titrated with the same EDTA solution, requiring 6.24 mL to reach the end point. Finally, a third aliquot of 25.00 mL was titrated at pH=11, requiring 11.10 mL of the same EDTA solution to complete the titration. Determine the percentage of each of the metals in the sample Given the molar masses: Fe=55.845 g/mol; Al=26.982 g/mol and Sr=87.620 g/mol.The Zn in a 0.7556-g sample of foot powder was titrated with 21.27 mL of 0.01645 M EDTA. Calculate the percentage of Zn in this sample. A silver nitrate solution contains 14.77 g of primary-standard grade AgNO3 in 1.00 L. What volume of this solution will be needed to react with 0.2631 g of NaCl.
- An EDTA solution was allowed to react with Pb²⁺ to produce 0.25 M PbY²⁻, 2.67×10⁻⁸ M Pb²⁺ and an excess of 0.10 M at equilibrium (K = 1.1×10⁸). What will be the hydronium ion concentration of the resulting solution?As part of a geological team that studied a local cave, you brought with you a bunch of 1.00 g rock samples to be studied. Each rock was prepared and titrated against 0.050 M EDTA. a. Calculate the percent calcite (CaCO3) content of rock A if it was titrated with 48.0 mL EDTAChromel is an alloy composed of nickel, iron and chromium.A 0.6472 g sample was dissolved and diluted to 250 mL. When a50 mL aliquot of 0.05182 M EDTA was mixed with an equal volumeof the diluted sample and all the three ions were chelated, a 5.11 mLback titration with 0.06241 M copper (II) was required.The chromium in a second 50 mL aliquot was masked through theaddition of hexamethylenetetramine, titration of the Fe and Nirequired 36.28 mL of 0.05182 M EDTA.Iron and chromium were masked with pyrophosphate in a third50 mL aliquot and the nickel was titrated with 25.91 mL of theEDTA solution.Calculate the percentage of nickel, chromium and iron in thealloy.
- 0.28g 0f MBr is dissolved in distilled water and made up to 250mL mark in a volumetric flask. 25 mL of this solution is titrated against 0.019 M silver nitrate solution using eosin as indicator. The end point was obtained at 12.4 mL of AgNO3 solution . Calculate the molar mass of the metal bromide.A solution was prepared by dissolving about 30.00m g of EDTA in approximately 1 L of water and standardizing against 50.00-mL aliquots of 0.004356 M Mg2+. An average titration of 32.65 mL was required. Calculate the molar concentration of the EDTA.Calamine, which is used for relief of skin irritations, is a mixture of zinc and iron oxides. A 1.022-g sample of dried calamine was dissolved in acid and diluted to 250.0 mL. A 50.00 mL aliquot was suitably buffered and titrated with 2.40 mL of 0.002727 M ZnY-2 (Zn-EDTA) solution to allow the following reaction: Fe+3 + ZnY-2 → FeY- + Zn+2. Molecular mass: Fe2O3 = 165.74 a. The weight of sample in the aliquot portion is _________g ? b. the percentage composition of Fe2O3 in the sample is ______ % ?
- A 0.2431 g sample of CaCO3 is dissolved in 6 M HCl and the resulting solution is diluted to 250.0 mL in a volumetric flask. Titration of a 25.00 mL sample of the solution requires 28.55 mL of EDTA to reach the Eriochrome Black T endpoint. A blank containing the same amount of Mg2+ requires 2.60 mL of EDTA. What is the molarity of the EDTA solution?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.Chromel is an alloy composed of nickel, iron and chromium. A 0.6553-g sample was dissolved and diluted to 250.0 mL. When a 50.00-mL aliquot of 0.05173 M EDTA was mixed with an equal volume of the diluted sample, all three ions were chelated, and a 5.34-mL back titration with 0.06139 M copper (II) was required.The chromium in a second 50.0-mL aliquot was masked through the addition of hexamethylenetetramine; titration of the Fe and Ni required 36.98 mL of 0.05173M EDTA. Iron and chromium were masked with pyrophosphate in a third 50.00-mL aliquot, and the nickel was titrated with 24.53 mL of the EDTA solution. Calculate the percentage of Cr in the alloy. Express your answer in 2 decimal places.