Use the following atomic masses (in g/mol): Ca = 40.08; C = 12.01; O = 16; Na = 23; Cl = 35.45 1.) Calculate the CaCO3 content of a chalk sample weighing 0.2545g, consuming 16.67mL of 0.1150M Disodium EDTA in titration.
Q: A 1.000 g sample of an aluminum is dissolved, and the sulfate precipitated as BaSO4. The precipitate…
A: Mass of sample of Al = 1.000g Mass of BaSO4 precipitated = 0.3486 g Molar mass of BaSO4 = 233.38…
Q: Name the compound as a phenol. OH name: CH3
A: Nomenclature of substituted benzene: 1) naming is done by placing the substituent as a prefix to the…
Q: Directions: Solve and show your solution. Write the interpretation of your answer. 1.) Consider the…
A:
Q: Compound Source Bees Ginnamon Coconut al Fish Garlic Lavender Lemon Mint Star Anise Stove Thyme…
A: The IUPAC name is given by scientists to maintain uniformity all around the globe.
Q: 4 (a) Calculate the value of Kc for the reaction: PC13 (8) + Cl₂ (g) AH = Positive PC15 (8) Given…
A:
Q: 21 The presence of the electron withdrawing group -NO2, and electron donating group -NH₂ in the…
A: It is false . Because,The electron donating group increase the electron density on the benzene ring.…
Q: The structure of cyclohexane is shown. H₂C | H₂C CH₂ | CH₂
A: Cyclohexane is known as cycloalkane having the formula C6H12
Q: the amount of oxygen required to convert ammonia organic if nitrogen forms into nitrate
A:
Q: Which is a structural isomer of 3-ethyl-3-methylhexane? O2,7-dimethyloctane…
A: Here we are required to find the structural isomer of the given compound
Q: 2CO(g) + O2(g) → 2CO2(g) 11) Carbon dioxide (CO₂) is removed. Choose 12) Carbon monoxide (CO) is…
A: According to the guidelines prescribed by Bartleby, we can answer a maximum of three questions.…
Q: Geometric isomers occur in some alkenes. These isomers are called cis-trans isomers because of the…
A: The cis-tans isomerization is a type of stereoisomerism. The molecule which contains a double bond…
Q: What's wrong with me? tetraamminezinc(3+)
A: In the IUPAC nomenclature of inorganic compounds after writing the ammine ligand no with name and…
Q: Which structures represent 2-methylbutane (C₂H₁2)? I H₂C CH₂ CH₂ Premier te H₂C CH, H₂C CH₂ CH, H₂C…
A:
Q: A 25.0 mL sample of H₂SO, requires 25.0 mL of 0.100 M KOH for complete neutralization. The initial…
A:
Q: 5. The mass of metal deposited by the electrolysis of an aqueous solution of metal ions increases in…
A: The mass of electrolysis depend Inversely to following factor.
Q: NH₂ 1. NaNO₂, HCI 2. HBF4
A: The reaction is Balz schiemann reaction.
Q: 1. Consider a buffer solution containing an acid with a pKa of 2.3 and an acid concentration that is…
A: Given, 1.A buffer solution containing an acid with a pKa is 2.3 and an acid concentration is…
Q: Alkenes can be converted to alcohols by reaction with mercuric acetate to form a…
A:
Q: Which of the following best explains why molecular compounds tend have lower melting points than…
A: Ionic compounds are formed by the strong electrostatic force of attraction between cation and anion.…
Q: In the complex ion, [Fe(CN)6], the primary valence of Fe is +6 +2 +4 -4
A: Given Complex : [Fe(CN)6]4- To find the primary valency of Fe
Q: Given that CuBr would precipitate later than CuI in a solution containing equimolar concentrations…
A:
Q: In a proccess of Lithium Chloride synthesis, the following experimental data were collected. Its…
A: Born-Haber cycles are used in calculating the lattice energy of a crystalline solids. Born Haber…
Q: What do you think will happen when sodium metal , Na, and Chlorine gas, Cl2, react to form table…
A: NaCl is an ionic compound. Ionic compounds are formed by ions. The metal atom loses electrons and…
Q: Consider the molecule. C ОН Which is the correct name for the given molecule? None of these names is…
A:
Q: 8 The number of isomers of the complex ion [Co(en)3]³+ is 4 geometric isomers 2 optical isomers 2…
A: Given-> ->[Co(en)3]3+
Q: Does a reaction occur when aqueous solutions of silver(I) nitrate and zinc sulfate are combined?…
A:
Q: Question 21 The half-life of a material undergoing second order decay is O independent of initial…
A: Half-life : It is the time required for a material to change it's concentration one-half of it's…
Q: DNA uses RNA to get the information to the ribosomes so it can make the protein. Use the following…
A: given find Amino acid sequence
Q: NH₂ 1. NaNO₂, HCI 2. HBF4
A:
Q: 11. Hydrogen and fluorine combine according to the equation H₂(g) + F2(g) → 2 HF(g) If 5.00 g of…
A:
Q: Which of the following secondary valence for complexes matches the expected structure of the…
A: secondary valence : number of ligands that are coordinate to the central metal atom/ion is called…
Q: For each pair of molecules, determine which would have the higher boiling point and explain why. a)…
A: To determine the molecule with higher boiling point with reasoning. Given Pair: (a) CH3CH2CH2CH3 Vs…
Q: What are the measures to prevent corrosion of metals (look for the electrochemical reactions…
A: There are various methods that we can follow to prevent the corrosion of metals. Some of the methods…
Q: 21 The presence of the electron withdrawing group -NO2, and electron donating group -NH₂ in the…
A: Electron donating group increase the electron density on the ring whereas electron withdrawing group…
Q: Calculate the solubility at 25 °C of AgCl in pure water and in a 0.0120M AgNO3 solution. You'll find…
A: At 25 °C, the Ksp of AgCl is 1.77 × 10-10 . Standard…
Q: 1. State all the products formed from Hofmann elimination of the following amine. Choose the major…
A: Hofmann's elimination : Hofmann's elimination is the process of creating tertiary amines and alkenes…
Q: t. 11 What's wrong with me? tetraamminezinc(3+)
A: According to the IUPAC nomenclature, the name should be in the order ligand metal (oxidation state)…
Q: A solution is made by dissolving 0.663 mol0.663 mol of nonelectrolyte solute in 849 g849 g of…
A:
Q: A 1.000 g sample of an aluminum is dissolved, and the sulfate precipitated as BaSO4. The precipitate…
A:
Q: NH₂ 1. NaNO₂, HCI 2. HBF4
A:
Q: व Griven a hydrobromic acid was Sta standardized Joy tictraction with a 0.171m Solution of farium…
A:
Q: The ascorbic acid, C6H806 (176.124 g/mmol) content of a bottle of peach juice containing 2.50 L was…
A: I have attached a detailed solution for the question in the following steps:
Q: In the complex ion, [Fe(CN)6], the primary valence of Fe is +6 +2 +4 -4
A: Let 'x' be the primary valence of Fe in the complex [Fe(CN)6]4-. Total charge of the complex = - 4…
Q: 7. Amino-Acids: a. Calculate the pl of each of the given amino acids 2.42 7.56 O OH HOT NH3* NH3*…
A:
Q: 2 Which of the following secondary valence for complexes matches the expected structure of the…
A:
Q: determine the energy in electronvolts of an emitted photon when an electron transition from n=3 to…
A: Given, Electronic transition occurs from n=3 to n=2
Q: Give the oxidation number of an atom in the compound a. Mn in Mn04- b. Cr in CrO2 2+ c. Fe in Fe304…
A:
Q: 1,3-dimethylcyclohexane can exist in a chair conformation with its substituents in the equatorial…
A: Conformational isomers: The conformational isomers are formed by the rotation of a carbon-carbon…
Q: What's wrong with me? cis-tetrachloridodifluoridosilver(I)
A: Coordination compounds are those in which central metal atom or ion are surrounded by ligands. The…
Q: 1. A sample of a gas occupies 1 L under pressure of 1.2 atm. What would its volume be if the…
A:
1.) Calculate the CaCO3 content of a chalk sample weighing 0.2545g, consuming 16.67mL of 0.1150M Disodium EDTA in titration.
Step by step
Solved in 3 steps
- An antacid tablet, weighing 1.25 g, was dissolved in a 1.0 L volumetric flask to allow for determination of calcium carbonate and magnesium carbonate contents. After preparing the solution, an aliquot of 10.0 ml was transferred to an Erlenmeyer flask containing a buffer solution with pH = 10. This aliquot was then titrated with EDTA 0.0040 mol/L and the average volume spent was 15.01 mL. To measure calcium after precipitation After the magnesium was fractionated, a second 10.00 mL aliquot of the stock solution was transferred to an Erlenmeyer flask. and the pH of the present solution was adjusted to a value of approximately 13. In EDTA titration, the volume consumed for observation of the end point was equal to 13.03 mL. Based on this information, (a) Outline the two steps involved, representing the related reactions. (b) Calculate the concentrations of CaCO3 and MgCO3 present in the initial solution. (c) Calculate the masses of CaCO3 and MgCO3 present in the pellet. (d) Calculate the…. An antacid tablet, weighing 1.25 g, was dissolved in a 1.0 L volumetric flask to allow for determination of calcium carbonate and magnesium carbonate contents. After preparing the solution, an aliquot of 10.0 ml was transferred to an Erlenmeyer flask containing a buffer solution with pH = 10. This aliquot was then titrated with EDTA 0.0040 mol/L and the average volume spent was 15.01 mL. To measure calcium after precipitation. After the magnesium was fractionated, a second 10.00 mL aliquot of the stock solution was transferred to an Erlenmeyer flask, and the pH of the present solution was adjusted to a value of approximately 13. In EDTA titration, the volume consumed for observation of the end point was equal to 13.03 mL. Based on this information, a) Outline the two steps involved, representing the related reactions./5 b) Calculate the concentrations of CaCO3 and MgCO3 present in the initial solution./6 c) Calculate the masses of CaCO3 and MgCO3 present in the pellet./6 d) Calculate…A 0.9352g sample of ore containing Fe³+, Al³+ and Sr²+ was dissolved and made up to 500.00 mL. The analysis of metals was performed using complexation volumetry. Initially, an aliquot of 50.00 mL had its pH adjusted to 1.0 and titrated with a standard 0.03145 mol/L EDTA solution, 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. Given the molar masses: Fe=55.845 g/mol; Al-26.982 g/mol and Sr-87.620 g/mol. a) Determine the percentage of each of the metals in the sample. b) Explain why the change in pH allows the determination of the three ions in this sample.
- Ammonium iron(II) sulfate crystals have the following formula: (NH4)2SO4.FeSO4.nH2O . In an experiment to determine n 8.492g of the salt were dissolved and made up to 250cm^-3 of solution with distilled water and sulphuric acid. A 25.0cm^-3 portion of the solution was titrated against 0.0150 mol dm^-3 KMnO4. A volume of 22.5cm^-3 was required. Find the value of n3. An antacid tablet, weighing 1.25 g, was dissolved in a 1.0 L volumetric flask to allow for determination of calcium carbonate and magnesium carbonate contents. After preparing the solution, an aliquot of 10.0 ml was transferred to an Erlenmeyer flask containing a buffer solution with pH = 10. This aliquot was then titrated with EDTA 0.0040 mol/L and the average volume spent was 15.01 mL. To measure calcium after precipitation. After the magnesium was fractionated, a second 10.00 mL aliquot of the stock solution was transferred to an Erlenmeyer flask, and the pH of the present solution was adjusted to a value of approximately 13. In EDTA titration, the volume consumed for observation ofthe end point was equal to 13.03 mL. Based on this information,a) Outline the two steps involved, representing the related reactions./5b) Calculate the concentrations of CaCO3 and MgCO3 present in the initialsolution./6c) Calculate the masses of CaCO3 and MgCO3 present in the pellet./6d) Calculate the…USE THE DATA BELOW ON MOLAR ABSORPTIVITIES FOR THE TWO PRINCIPAL SPECIES IN A SOLUTION OF POTASSIUM DICHROMATE. Four solutions were prepared by dissolving 3.50 x 10^-4 , 3.00 x 10^-4, 2.50 x 10^-4, and 2.00 x 10^-4 moles of K2Cr2O7 in water and diluting to 1.0 L with a pH of 5.55 buffer. Derive theoretical absorbance values using a 1.00-cm cells for each solution and plot the data for (a) 345 nm (b) 370 nm, and (c) 400 nm.
- A 2.559 g sample containing both Fe and V was dissolved under conditions that converted the elements to Fe(III) and V(V). The solution was diluted to 500.0 mL and a 50.0 mL aliquot was passed through a Walden 4+ reductor and titrated with 17.74 mL of 0.100 M Ce . A second 50.0 mL aliquot was passed through a Jones reductor and required 44.67 mL of the same Ce4+ solution to reach an endpoint. Calculate the percentage of Fe2O3 and V2O5 in the sample.Titration of a 25.00 mL sample of mineral water (containing both Ca2+ and Mg2+) at pH 10 required 19.18 mL of 0.01125M EDTA solution. Another 25.00 mL aliquot of the same mineral water was rendered strongly alkaline to precipitate the magnesium. Titration with a calcium-specific indicator required 14.92 mL of the EDTA solution. Calculate the mass of MgCO3 (FW= 84.314 g/mol) in the mineral water in mg (keep 2 decimals).Use the following atomic masses (in g/mol): Mg = 24.31; H = 1; S = 32.06; O = 16; Na = 23; Cl = 35. 45; Ca = 40.08; C = 12.01; N = 14.01; Mg = 24.31 6.Calculate the magnesium oxide content of 12.35 g Magnesia Magma, which has been dissolved in 50 mL of 1.0340 N H2SO4 and required 24.6 mL of 1.1255 N NaOH in the back titration.
- Use the following atomic masses (in g/mol): Mg = 24.31; O = 16; Ca = 40.08; C = 12.01; Na = 23; H = 1; N = 14.01; S = 32.06; Cl = 35.45; 1.) Calculate the MgO content of 12.35g Magnesia Magma, which has been dissolved in 50mL of 1.0340N H2SO4 and required 24.6mL of 1.1255N NaOH in the back titration.Calculate the mass of disodium EDTA (FW 372.25) needed to make 500-mL 0.015 M solution of EDTA. What is the equilibrium concentration of Y4- if the pH is (1) 7.00, and (2) 9.00?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.