The Zn in a 0.6803-g sample of foot powder was titrated with 27.3 mL of 0.04246 M EDTA. Calculate the percentage of Zn (65.39g/mol) in this sample.

Q: A 25.5 mL volume of a 0.01140 M KMnO4 solution was used to reach the equivalence point in the…

A:

Q: 1. A 0.2700 g sample of impure Na,CO3 required 24.12 mL of 0.1684 M HCI and a back- titration with…

A: Solution -

Q: in an experiment, the molecular formula for calcium hydroxide was determined to be Ca(OH)2. In this…

A: Given that : The mass of Ca = 0.050 g The volume of DI water = 150 mL The molarity of HCl = 0.30 M

Q: In the analysis of a sample for KH2PO4content, a sample weighing 0.3994 g required 18.28 mL of…

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Q: Tungsten trioxide (Wo,) has a rich yellow color and is often used as a pigment in ceramics and…

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Q: A 0.2386-g sample contained only NaCl and KBr was dissolved in water and required 50.00 mL of…

A: The mathematical relationship between the number of moles and the mass of the substance can be…

Q: It required 11.96 mL of 0.102 M NaOH to titrate a 0.0927 g sample of an unknown monoprotic acid to…

A: Calculate the moles of NaOH,          (0.102 mol/L) (0.01196 L) = 0.00121992 mol

Q: Determine the % w/w chloride in the sample. A 0.3285 g sample containing chloride and inert…

A: The % w/w chloride in the sample has to be given, Given : The mass of the solute is 0.3285 g. The…

Q: 34.19 mL of 0.17 M HNO2 (a weak acid) is titrated with 0.17 M NaOH (a strong base). What volume of…

A: Balanced chemical equation is,HNO2 + NaOH = NaNO2 + H2OAt equivalence point, both reactants…

Q: A 10.00 ml sample containing 6.0000 g/L of a mixture of KCI (74.5 g/mol) and NaCl (58.5 g/mol) was…

A: Given: Volume of sample = 10.00 mL And density of sample = 6.0000 g/L.

Q: D. Acid-Base Titrations A 0.1558 g of primary-standard-grade benzoic acid, CsHsCOOH, was used to…

A: Hello. Since multiple questions have been posted, the first question shall only be solved in this…

Q: A volume of 50 mL of 1.8 M NH3 is mixed with an equal volume of a solution containing 0.95 g of…

A: The concentration of Mg2+ ion in the resulting solution of 100 mL is;…

Q: A student wanted to determine the amount of NaOCI in a commercial bleaching solution. He diluted 2 g…

A: Given that -  Volume of Na2S2O3 = 17 mL  Molarity of Na2S2O3 = 0.05 M  Volume of sample of bleach…

Q: A sample of Na2CO3 is titrated with 0.250M H2SO4. If the sample weighs 1.1000 g and requires 35.00…

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Q: You are given 5.0 gram of an unknown sample is titrated via 0.125N standard HCl. Volume of titrant…

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Q: When 2.270 mol KOH is added to 1.00 L of 0.50 M Al(NO3)3 . After the aluminum nitrate has reacted…

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Q: A solution of HClO4 was standardized by dissolving 0.4008 g of primary-standard-grade HgO in a…

A: From 1 mole of HgO 2 moles of OH- are released. And HClO4 gives 1 mole of H+. Number of moles of HgO…

Q: 0.28g 0f MBr is dissolved in distilled water and made up to 250mL mark in a volumetric flask. 25 mL…

A: The titration  of MBr by AgNO3 is a double-displacement reaction, which is given by,…

Q: A 250 ml solution is prepared with 1.5 g KCI salt and a 50 ml sample is taken from it. Over 40 ml…

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Q: 4. In an experiment to determine the concentration of an HCCI sample of unknown concentration, 0.1 M…

A: The concentration of unknown solutions is calculated by using the process of titration. The…

Q: .00 mL of a nitric acid solution of unknown concentration is pipetted into a 125-mL Erlenmeyer ask…

A: Molarity is defined as “the mole of the solute per unit volume of the solution”. It is represented…

Q: An excess of potassium iodide is added to a solution of potassium dichromate, and the liberated…

A: K2Cr2O7 is a strong oxidizing agent. It will oxidize the Iodine from Iodide to molecular iodine. The…

Q: A 10.0 mL aliquot of H2 SO4 solution was diluted to 100.0 mL. Then 25.0 mL aliquot of the diluted H2…

A: Here we are required to find the molar concentration of original sulphuric acid

Q: A 25.00 mLmL sample of an H2SO4H2SO4 solution of unknown concentration is titrated with a 0.1372 MM…

A: Given the data contains, Volume of sulfuric acid is 25.00 mL=0.025 L The molarity of potassium…

Q: How many milliliters of 0.0850 M NaOH are required to titrate each of the following solutions to the…

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Q: 16. 25.0 mL of 1.074 M HCI is added to 1.13 g sample of eggshell. Calcium carbonate in the egg…

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Q: A manufacturer makes lemon cordial by mixing flavoring, sugar syrup and citric acid. The…

A: Given that, Volume of HCl (V1) = 25 mL      Its strength (S1)= 0.1 M Volume of NaOH (V2) = 24.10 mL…

Q: I titrate a 5.00mL aliquot of Arsenic acid with 36.09 mL 0.126M sodium hydroxide. Calculate the…

A: First we need to write a balanced chemical reaction. Then we would calculate moles of sodium…

Q: What minimum volume of 0.09621 M AgNO3 willbe needed to assure an excess of silver ion in the…

A: The 0.2513 g sample of NaCl is assumed to have no impurities in this case, just to make certain that…

Q: An alkaline earth hydroxide, M(OH)2, was taken to lab for analysis. The unknown powder was poured…

A: Please find the solution attached.

Q: 16. 25.0 mL of 1.074 M HCI is added to 1.13 g sample of eggshell. Calcium carbonate in the egg…

A: We have to predict the percentage of calcium carbonate in the egg shell.

Q: A 4.60 mLmL sample of an H3PO4H3PO4 solution of unknown concentration is titrated with a 1.100×10−2…

A: Volume of H3PO4 solution =4.60 mL  Molarity of NaOH solution = 1.100X10-2 Volume of NaOH =7.32 mL…

Q: 2. Using the procedure described in this module, a student determined the percent KHP in an impure…

A: The balanced equation for the reaction between KHP and NaOH is   KHP + NaOH ---------> NaKP + H2O…

Q: A 29.00 mLmL sample of an H2SO4H2SO4 solution of unknown concentration is titrated with a 0.1372 MM…

A: Given :-  Molarity of KOH solution = 0.1372 M  Volume of KOH solution = 41.22 mL  Volume of H2SO4…

Q: Definition/explanation of titer in chemistry.

A: Titer (US – titre in British English) is a way of expressing concentration. ... In titration, the…