A 2.432 grams of primary standard Na2CO3 (MW = 106) requires 47.26 mL of a H2SO4 solution to reach the end point in the reaction CO32- + 2H+ solution. %3D CO2g). Calculate the molarity of the H2SO4
Q: A stock solution of potassium permanganate (KMn04) was prepared by dissolving 13.0g KMn04 with DI in…
A: Record the given data, The given weight of KMnO4 = 13.0 gm The molecular weight of KMnO4 = 158 g/mol…
Q: Q1. Dissolved 0.273 grams of pure sodium oxalate (Na.C.O.) in distilled water and added sulfuric…
A: Normality of solution is equal to equivalents per litre. And Normality = n-factor × Molarity
Q: The %purity of a powdered crude sample of Na2CO3 containing only inert impurities is to be…
A: The balanced chemical equation between Na2CO3 and HCl to produce NaCl, H2O and CO2 can be…
Q: 4. A 0.1475-M solution of Ba(OH)2 was used to titrate the acetic acid (60.05 g/mol) in a dilute…
A: Molar concentration, also known as molarity, is defined as the number of moles of solute present in…
Q: The weight of 5 ml of vinegar sample was 5.228 g, was required 30.5 ml of 0.2 M sodium hydroxide…
A: Acid reacts with base to form salt and water and this reaction is known as neutralization reaction.…
Q: QI/Prepare 0.1N of CH,COOH in 500 mL, Specific gravity 1.05 gm/cm and percentage 99.5% ?
A: Pipette out 3 ml concentrated CH3COOH (17.4 N) in a 500 ml volumetric flask and dilute it up to the…
Q: 4. Calculate the molar concentration of a 20.0% solution (w/w) of KCI that has a specific gravity of…
A: Number of moles is calculated by dividing the given mass with molecular mass.
Q: 4) How would your calculated value of Kup be affected by errors introduced from the following…
A: Solubility product constant (equilibrium constant, Ksp) designates the attainment of equilibrium…
Q: Prepare 1000ppm of Cd (NO3).4 H2O in a liter, then preprare from the 1000ppm(which is a stock)…
A: Given information, (a) Concentration (in ppm) of Cd(NO3).4H2O = 1000 ppm Volume of solution = 1 L =…
Q: Electrolytic manganese dioxide can be prepared from manganese carbonate ore by crushing, milling and…
A: Preparation of manganese dioxide from magnesium carbonate ore by crushing, milling and leaching the…
Q: lution, and bubbling the resulting CO2(g) product in water that is at exactly 29 °C. After the…
A: The balanced chemical equation between Na2CO3 and HCl to produce NaCl, H2O and CO2 can be…
Q: An analyst weighed 0.25045 g of the Buffalo River Sediment reference material. (RM # 8704) to…
A:
Q: 1. A 4.59 mL sample of HCl, specific gravity 1.3, required 50.5 mL of 0.9544N NaOH in a titration.…
A:
Q: The %purity of a powdered crude sample of Na2CO3 containing only inert impurities is to be…
A: #(a): Na2CO3 reacts with HCl to produce H2CO3(aq) and NaCl. H2CO3(aq) decomposes further to form…
Q: Consider the following method for the analysis of cocaine (MW 303.35) powder. "Dissolve about 600 mg…
A: Given the mass of cocaine powder weighed = 606.3 mg molarity of HClO3 used = 0.09978 M Volume of…
Q: Approximately 6.0mL of concentrated perchloric acid (70%) was transferred to a bottle and diluted…
A: 251.5 mg of primary standard Na2B4O7. 10 H2O requires 27.41 mL of HClO4 solution to reach the end…
Q: concentrated H2SO4 has the following composition specific gravity 1.84 and purity of H2SO4 is 97…
A: Calculation of concentration of the solution in molarity (mol/L) with known values of density,…
Q: To a 0.5 g sample of impure NaCl are added 0.784 g of pure AgNO3 (MW = 169.88) crystal. This is in…
A: A precipitation reaction involves the formation of a solid, insoluble substance. In Stoichiometry,…
Q: Express 50ppb of Iron in water in ratio strength. O 1:20,000,000 O 1:20,000 O 1:200,000 ho O…
A: The question is based on the concept of solutions. We have to calculate ratio strength of the iron…
Q: A 0.937-g sample containing Ca2+ was dissolved to produce a 500-mL stock solution. A 50-mL aliquot…
A:
Q: 1. What is the MW of the analyte? 2. What is the meq of the analyte? 3. What will be the weight (in…
A: Since you have asked a question with multiple subparts we will answer the first three for you. To…
Q: If 250 mL of a 1:800 (v/v) solution were diluted to 1000 mL, what should be the ratio strength? The…
A:
Q: and in 4) To adjust the thiosulfate (S2O32) solution to be used as a titrant in the copper…
A:
Q: A chemist received different mixtures for analysis with the statement that they contained NaOH,…
A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…
Q: A 0.1475-M solution of Ba(OH)2 was used to titrate the acetic acid (60.05 g/mol) in a dilute aqueous…
A: In order to find the mean w/v percentage of acetic acid in the sample. we have to find the w/v…
Q: d. 200 mL of 5.00% (w/v) aqueous BaCl2 from a 0.300 M BaCl2 solution. e. 2.00 L of 0.500 M HCIO,…
A:
Q: 3. Given: Soda and lime are added to a glass batch in the form of soda ash (Na₂CO,) and limestone…
A: We have to calculate the weight of soda ash and Limestone that must be added to 110 lbm of SiO2 to…
Q: 0.5M HA sample with 0.2 dissociation; It is placed in a conductivity cell with a length of 0.9 cm…
A: Given: Concentration of weak electrolyte = 0.5 M Length = 0.9 cm Area = 2cm2
Q: Hydrogen peroxide solutions can easily be decomposed by dust, trace amounts of metals or light. It…
A: Given: Density of hydrogen peroxide solution = 1.11 g cm-3 = 1.11 g/mL Volume of H2O2 used for…
Q: Suppose you have a soil that is made up of 10% organic matter with CEC = 200 cmol/kg, 40% kaolinite…
A: Given: A soil with- 10% organic matter with CEC = 200 cmol/kg 40% kaolinite with CEC = 10 cmol/kg…
Q: The weight of 0.1012 g of magnesium sulphate consumed 14.5 mL of EDTA solution (0.05M). What is the…
A: Given data,Mass of Magnesium sulphate=0.1012gMolarity of EDTA=0.05MVolume of EDTA=14.5mL
Q: 4. determine the amount in mg of the amount of Ag present from ICP mass digested: 1.0821g/L dilution…
A: Inductively coupled plasma mass spectrometry, commonly known as ICP-MS, is one type of spectrometry…
Q: 1. What is the MW of the analyte? 2. What is the meq of the analyte? 3. What is the weight (in…
A: Since you have asked a question with multiple subparts we will answer the first three for you. To…
Q: A 3mL sample of NaOCl solution was diluted with water and treated with 2g of KI and 10mL Acetic…
A: Here 3ml of sample of NaOCl solution was treated with 2g of KI and 10 ml CH3COOH . The solution…
Q: Q1. A 100 g soil containing 20% smectitie mineral matter was mixed with 150 ml solution containing…
A: Assume that the cation exchange capacity of soil is entirely because of the smectitie mineral…
Q: A weight of 0.50 g was taken impure container containing sodium carbonate and bicarbonate. Dissolved…
A: In the carbonate composition analysis, the mixture containing unknown amounts of sodium carbonate…
Q: Give the molar concentration of hydrochloric acid with a specific gravity of 1.18 and has 37% (w/w)…
A: Consider the given information is as follows; Specific gravity = 1.18 Percent (w/w) of HCl = 37%…
Q: The %purity of a powdered crude sample of Na2CO3 containing only inert impurities is to be…
A: A eudiometer is used to find the volume of a gas produced during a chemical reaction. It is also…
Q: Consider the following method for the analysis of cocaine (MW 303.35) powder. "Dissolve about 600 mg…
A: For acid base titartion: Nacid x Vacid = Nbase x Vbase Since the given acid is monoprotic and there…
Q: In 10 g of a PVC sample (Mw = 100,000; Mn = 70,000), you add 20 g another PVC sample with Mw 60,000,…
A: Polymers are extended chains, and huge organic molecules that are produced from multiple shorter…
Q: A empty evaporating dish weighs 30.56g. You place 20.0mL of an NaCl solution in the dish plus the…
A: Molarity is the number of moles of solute dissolved in per litre of solution. It is denoted by M.…
Q: f to a solution of NaOH, in water and ethanol (20 ° C) 3 mmol of A (106.11 g / mol) and 2 mmol of B…
A: Given reaction is 2A + B ⟶ C It is given that: Amount of A = 3 mmol Amount of B = 2 mmol Amount of…
Q: of methylene chloride BA + NaOH --> sodium benzoate + H2O BA = 0.0205 M NaOH = 0.0189 M NaOH…
A: In the above we have to calculate the distribution coefficient K
Q: Dissolve 1.7 g in a mixture of 2 ml. of nitric acid (-130 g/l) TS and 40 ml of water, and proceed as…
A: The analyst recorded a weight of 1.8652g of sample using an analytical balance.
Q: Blank determinations reveal errors due to interfering contaminants from the reaagents and vessels…
A: Here we have to say above statement is true or false-
Q: The researcher extracts a sample of well water and prepares it for TXRF analysis with a 10.00 mg/L V…
A: As per the given data, TXRF = 10.00 mg/L Calibration coefficient = 69297.81
Q: 5-22 is my question.
A: The concentration of the analyte can be calculated by determining the relative response factor. The…
Q: eactant: 0.400g of p-amionphenol (MW=109.1) 0.450 ml of acetic anhyride (mw= 102.1 d= 1.08 ml)…
A: Given : actual yield = 78% mass of acetaminophene = 151.2 g mass of P-aminophenol = 0.400 g (MW =…
Q: If you have 6.61 g of caffeine dissolved in 72.3 mL of water and the extraction coefficient between…
A: The extraction coefficient can be described as the ratio of the concentration of the substance in…
Q: c. An Analytical laboratory at SMU has a bottle of concentrated HCI solution labelled, specific…
A: C). given that Specific gravity = 1.2 g/cm3 the density of the solution will be equal to the…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Gravimetric analysis of Fe3O4 (MW = 232 g/mole) may be undertaken with the following reactions: Fe3O4 → Fe2O3 → Fe (OH)3. Weight of sample containing 8.00% Fe3O4 that must be taken to obtain a precipitate of Fe(OH)3 (MW = 107 g/mole) that weighs 150 mg is . a. 0.108 g b. 0.325 g c. 1.355 g d. 4.065 g Amount of Fe2O3 (MW = 160 g/mole) from which 150 mg of Fe(OH)3 (MW = 107 g/mole) may be obtained is . a. 0.112 g b. 0.224 g c. 0.448 g d. none of the other choicesIn one trial determination of the concentration of NaOCl in the diluted bleach sample, 10.00 mL of the diluted bleach solution required 23.32 mL of 0.0195 M Na2S2O3 titrant to reach the endpoint. What is the molar concentration of NaOCl in the diluted bleach solution?A stock solution of potassium permanganate (KMn04) was prepared by dissolving 13.0g KMn04 with DI in a 100ml volumetric flask and diluting to the calibration mark. Determine the molarity of the solution.
- Prepare 50ml of approximately 1000ppm Mn stock solution from MnCl2*4H2)The solubility of borax, which is made up of sodium tetraborate (Na2B4O5(OH)4 8H2O), was analyzed. The dissolution of borax is: Na2B4O5(OH)4 • 8H2O(s) ⇌ 2 Na+(aq) + B4O5(OH)42–(aq) + 8 H2O(l) A 50 mL saturated solution was prepared. After filtration of solution, 5 mL aliquot was transferred to a flask and titrated using 0.432 M HCl. The endpoint was found to be 4.73 mL of the titrant. Tetraborate anion (B4O5(OH)42-) is a weak base which reacts with HCl like the following reaction: B4O5(OH)42–(aq) + 2 H+(aq) + 3 H2O(l) ⇌ 4 H3BO3(aq) What is Ksp expression for the dissolution? What is the tetraborate ions concentration in the filtrate? What is the molar solubility and Ksp of borax if the titration was done at room temperature (298 K)?Determine the volume of glacial acetic acid to prepare 500 ml of a 0.020 M acetic acid solution (glacial acetic acid; strength 99.8%, density 1.05 g/ml, MW 60.05 g/mole).
- Mass solute needed to prepare 0.500L of 0.2 M NaCO3 from a solid NaCO3 with a purity of 92.0wt%Prepare 1500mL of 0.5N H2SO4 solution with specific gravity of 1.84g/mL and assay of 97%An impure sample of calcium carbonate with a mass of 7.95 g was reacted with 50.00 cm3 of 1.00 mol dm hydrochloric acid (an excess). The resulling solution was transferred to a volumetric flask and titrated with 11.10cm3 of 0.300 mol dm-3 sodium hydroxide solution. Determine the percentage purity by mass of the calcium carbonate sample.CaCO3 + HCl -> CaCl2 + H2O + CO2 HCl + NaOH -> NaCl +H2O a. Determine how many moles of hydrochloric acid were used.b. Determine how many moles of excess HCI was titratedc. Determine how much in moles calcium carbonate present in the sample.d. Calculate the mass of calcium carbonate presente. Determine the percentwge calcium carbonate is in the sample.
- Potassium acid phthalate, KHC8H4O4 ( MM=204.2 ), reacts with sodium hydroxide on a 1:1 molar basis. A sample of the acid weighing 0.4823 g was titrated with NaOH, requiring 24.35 mL to reach the endpoint. Calculate the molar concentration of the sodium hydroxide solution.A 0.2500-g of dry CaCO3 was completely dissolved into a solution of 5-mL conc. HCl and 50-mL distilled water in an erlemeyer flask. The resulting solution was boiled for 5 minutes to expel CO2 from the reaction, and then it was cooled to room temperature and the solution was transferred in a 500-mL volumetric flask filled to volume by rinsing the erlenmeyer flask and combining all the washings to fill the mark. A 5.0-mL aliquot of the CaCl2 solution was taken from the orignal solution and was transferred into an erlenmeyer flask with 10-mL NH3 buffer, 20-mL distilled water, and 5 gtts of EBT. The solution consumed 4.96 mL of an EDTA solution. MW: CaCO3 = 100.1 Compute for the N EDTA solution. 0.0053 N 0.0531 N 0.5313 N None of the choices1-3: A stock solution of 70% v/v ethanol was diluted with distilled water to prepare 1L of 21% v/v ethanol. (Density of ethanol = 0.789 g/mL; MW of ethanol = 46 g/mol) 1. Determine the initial volume of 70% v/v ethanol used in the preparation. 2. How much water was added to the stock solution to make 1L of the final concentration? 3. The molarity of 5.0 mL of 70% v/v ethanol was found to be __________. 4-6: A solution contains 45.0 g of methanol, CH3OH, dissolved in sufficient water to give a total mass of 210.6 g. 4. Compute for the number of moles of the solute present in the given solution. 5. What is the mass (in kg) of water used to dissolve the solute from the given problem? 6. Determine the molal concentration of the said solution.