Weighed out 1.562 g Fe-Ash (formula wt = 392.13 g/mol) and dissolved in 40ml of water. It took 28.65 ml to reach endpoint with the KMnO4 solution in the beret. What is the molarity of the KMnO4 solution? 8H^+(aq) + 5Fe^2 (aq) + MnO^4-(aq) --> Mn^2+(aq) + 5Fe^3+(aq) + 4H2O

Q: An aspirin sample, 0.62 grams, was titrated with 28 mL of 0.105 M NaOH solution. What is the percent…

A: The Question is Based on experimental Chemistry . We have to calculate percentage purity of the…

Q: A student prepares a dilute solution of sodium hydroxide, NaOH (aq), starting with 6 M sodium…

A: The information given as concentration of NaOH is 6M. Mass of KHP=1.372g Volume of NaOH is 21.84…

Q: If the copper standard solution has a concentration of 25 μg/mL, what is the concentration of a…

A: Given Concentration of copper standard solution = 25 μg/ml

Q: In one trial of the standardization of a Na2S2O3 solution, a 10.00 mL volume of 5.00×10-3 M KIO3 is…

A: Solution is given below in next step

Q: If 2.50 mL of vinegar requires 34.90 mL of 0.0960 M NaOH to reach the equivalence point in a…

A: Given values are - Molarity of NaOH = 0.0960M Volume of NaOH = 34.90 ml At equivalence point volume…

Q: used a pipette to add 25 cm of sodium hydroxide of unknown concentration to a conical flask. The…

A: Few questions based on acid-base titration, which are to be accomplished.

Q: 2. Would the calculated value of the molarity of the NaOH solution be too high or too low or…

A: (a)The molarity of the NaOH would get lower due to the dilution of the NaOH solution. Consider V* be…

Q: What is the mass of sodium oxalate (Na2C2O4, MM = 134,00 g/mol), in mg, should be taken so that in…

A:

Q: How many grams of KClKCl must be added to water to create 5.0 LL of an 0.020 MM KClKCl electrolyte…

A:

Q: Starting concentrations of yourmetal ions in your initial solution: [M+]= 4.00 x 10-5 M [M2+]=…

A: Precipitation will start when Ksp = ionic product ionic product is the product of concentration…

Q: An unknown sample containing a mixture of NaCl and Na2CO3 was analyzed to determine the %…

A:

Q: A student is asked to perform a neutralization reaction between hydrochloric acid, HCl and sodium…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A volumetric pipette was used to transfer 18.00 mL of 1.150 M HCI solution into a 125 mL flask. Four…

A: The balanced chemical equation between NaOH and HCl is given by        HCl(aq)    + NaOH(aq)…

Q: A student is asked to perform a neutralization reaction between hydrochloric acid, HCl and sodium…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: KHP (aq)+NaOH (aq)-->NaKHP (aq)+H2O(l)   Trial  Vi (mL) Vf (mL) 1 36.19 48.56 2     3       A…

A: According to the chemical equation, the number of moles of KHP react with NaOH are equal.

Q: The analyst wanted to measure the zinc oxide content of a 1.25-g sample. The sample was treated…

A: As per rules, only three questions can be answered: Titrimetric analysis method: Back titration…

Q: 4. Which is more efficient method of separating solids from liquids by filtration or by decantation?…

A: 4. Filtration is more efficient to separate solid from liquid. If decantation is done , there is a…

Q: Maganite is the leading brand for antacid to alleviate heartburn. Its active ingredient is a…

A: A 50.0 mL saturated solution was prepared. After filtering each solution, a 5.0 mL  aliquot was…

Q: What mass of Fe(OH)3 (MW = 106.87 g/mol) will be obtained when 100. mL of 0.240 M FeCl3 (MW = 162.2…

A:

Q: 4.Suppose you run a titration of an acid yourself. You do it three times be- tween an acid and…

A: Given information is as follows; Average mass of acid = 9.555 g Volume of sodium hydroxide = 9.10 mL…

Q: In their second titration trial, a student calculated that a 27 mg sample of their antacid…

A:

Q: A volumetric pipette was used to transfer 10.00 mL of HCI solution into a 125 mL Erlenmeyer flask. A…

A: Given: Concentration of NaOH = 0.9980 M Volume of NaOH solution dispensed = 15.50 mL And volume of…

Q: We want to determine the purity of alum sample bought in a local pharmacy in Miagao. A Chem 28…

A: Mass of sample = 1.5879 gm  Mass of Al2O3 = 0.1572 gm  Molar mass of potash alum = 474.4 gm/mole…

Q: The titration of 25.0 mL of an iron(II) solution required 18.0 mL of a 0.115 M solution of…

A: Net ionic equation for the reaction between iron(II) and dichromate is shown below. Number of moles…

Q: one trial of the standardization of a Na2S2O3 solution, a 10.00 mL volume of 5.00×10-3 M KIO3 is…

A: Given  Taken 10.00 mL volume of 5.00×10-³ M KIO3  15.96 mL of sodium thiosulfate solution   We have…

Q: A solution was prepared by dissolving 435 mg of K3Fe(CN)6 in enough water to give 945 mL of…

A: As the question contains multiple sub-parts so only the first three are solved in this solution. If…

Q: You measure 1.5232 g of oxalic acid on an analytical balance, add it to a 250-mL volumetric flask…

A: moles of oxalic acid= concentration of oxalic acid x volume of oxalic acid used Given…

Q: Standardization of NaOH Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 0.785 0. l690g 0.8239 Mass of KHP…

A: The mass of KHP used in trial 1, trial 2 and trial 3 is 0.785 g, 0.690 g and 0.823 g, respectively.…

Q: A student prepares a dilute solution of sodium hydroxide, NaOH (aq), starting with 6 M sodium…

A: A) Given : Volume of diluted NaOH solution required = 21.84 mL = 0.02184 L…

Q: A student mixed 100.00 mL of Ba(OH)2(aq) (unknown molarity) with 500.00 mL of 0.0200 M NAOH(aq) in a…

A: Solution -

Q: Use the data below for the concentrated acids and bases. Reagent Concentration %w/w 99.7 29.0 37…

A: we can prepare a  diluted solution from  concentrated stock solution using dilution law

Q: A permanganate solution is prepared by dissolving 20.0123 g KMNO4 in 500 mL of distilled water and…

A:

Q: Solution A was prepared by weighing 6.08 grams of K3Fe(CN)6 (MW 329.2 g/mol) and dissolving the…

A: Given the mass of K3Fe(CN)6 taken to prepare the solution-A = 6.08 g  Molar mass of K3Fe(CN)6 =…

Q: - Calculate the equivalent weight and normality for a solution of 6.O M H3PO, given the following…

A: The equivalent weight of the compound can be defined as the ratio of molecular weight by no. of…

Q: A quantitative analysis for ethanol, C2H6O, can be accomplished by a redox back titration. Ethanol…

A: When it comes to back titration, the stoichiometry between Cr2O72- and the analyte C2H6O and between…

Q: A chemist wants to determine the concentration of an unknown HCl solution. She prepares a base…

A: GIVEN: Mass of magnesium hydroxide= 33.45 g Volume of water = 500.0 mL Volume of HCl acid=35.00 mL…

Q: The tartaric acid, H2C4H4O6 (150.087 g/mol ) in 100.0 mL wine sample was determined using sodium…

A: The question is based on the concept of titrations.   we are titrating  a weak acid with a strong…

Q: A student begins a titration experiment by filling her first buret with unknown acid to the 1.12 mL…

A: From given  Both blank 1 and 2 is determined by using volume of acid and base formula It is as…

Q: 7.63 mL of a 0.15 M stock solution into a 25.00 mL volumetric flask and dilute to the mark with…

A: Given information: 7.63 mL of a 0.15 M stock solution Volume of new solution is 25.00 mL

Q: 26. A student titrated nitric acid, HNO3(aq), with sodium hydroxide, NaOH(aq), using phenolphthalein…

A: 25) In the environment (soil, natural waters, etc.) I think ferric ions tend to be less soluble…

Q: Virtual graduate student Sherry Molestonecraft is assigned to help you carry out the standardization…

A: 1.30 grams of solid KHP has a molar mass of 204.2gmol isdissolved in 50 mL of water (In an…

Q: A permanganate solution is prepared by dissolving 20.0123 g KMNO4 in 500 mL of distilled water and…

A: Given: The reaction is as follows, 5H2C2O4+2MnO4-+6H+⇌10CO2+2Mn2++8H2O Molarity of oxalic acid =…

Q: How many grams of pure [% Na_2CO_3 %] must be weighed and dissolved in a solution, if you are to…

A:

Q: Maganite is the leading brand for antacid to alleviate heartburn. Its active ingredient is a…

A: The amount of a substance that resides in a solution determines the concentration of the solution.…

Q: Molarity of KMNO4 solution (M) from bottle Final reading of buret (KMNO4) (mL) Initial reading of…

A: We have to find the moles of KMnO4

Q: An analytical chemist weighs out 0.063 g of an unknown monoprotic acid into a 250 mL volumetric…

A:

Q: The conversion of nitrogen to ammonia, an essential process in the nitrogen cycle, occurs only in…

A: Given, the reaction involved in the titration: The volume of the Mo3+ sample = 30 mL The volume of…

Q: In one trial of the standardization of a Na2S2O3 solution, a 10.00 mL volume of 5.00×10-3 M KIO3 is…

A: We have to calculate the Molarity of sodium thiosulfate .

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".