A 20 ml sample of water from the Taal lake was brought to the laboratory for analysis. The dissolved oxygen (DO) was calculated to be 10.5 mg/L when titrated with .035 N NażS2O3. How much (in mL) of the titrant was used? 0.075 1.075 0.75 1.75

Q: A 0.9600 M NaOH solution was diluted with a factor of 4. Then the diluted solution of NaOH was…

A: (i) The initial concentration of NaOH = 0.960/4 = 0.2400 M. From the given table the volume of NaOH…

Q: Calculate the concentration (M) of sodium ions in a solution made by diluting 50.0 mL of a 0.874 M…

A: Given values: Initial volume: V1 = 50 mL Initial concentration: C1= 0.874 mL Final volume: V2 = 250…

Q: An impure sample of oxalic acid (H2C2O4) was oxidized by potassium permanganate. A 0.261-g sample of…

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

Q: The concentration of your sodium thiosulfate is 0.520 M. You use a sample of 100 mL of your tap…

A: Given that -  Molarity of sodium thiosulfate, Na2S2O3 = 0.520 M  Volume of tap water used = 100 mL…

Q: A 50.00-ML water sample was titrated with 0.0250 M EDTA to determine its calcium content. The…

A: The question can be solved using the law of equivalence. The detailed solution is shown below.

Q: Use the equation below to calculate the following: 3Ca(NO3)2(aq) + 2Na3PO4(aq) --> Ca3(PO4)2(s) +…

A: (d) Given,             From the balanced equation 3 moles of Ca (NO3)2 reacts with 2 moles of…

Q: A 0.9600 M NaOH solution was diluted with a factor of 4. Then the diluted solution of NaOH was…

A: As you have posted multiple questions in a single request, we will solve the first question for you.…

Q: A titration experiment required 19.50 mL of NaOH, which had a concentration of 0.150 M, to reach the…

A: The end point of a titration is the point at which the indicator changes color.

Q: A 1.3820 gram sample of K2CO3 (138.20 g/mol) is dissolved in enough water to make 250.0 mL of…

A:

Q: 0.300 g of a nitrogen-containing sample is analyzed by the Kjeldahl method and the released ammonia…

A: The Kjeldahl method is a method for the quantitative determination of nitrogen contained in organic…

Q: Titration reveals that 13.44 mL of 2.0 M sulfuric acid are required to neutralize the potassium…

A: Given: Molarity of Sulfuric acid=2.0 mol/L The volume of Sulfuric acid=13.44 mL The volume of…

Q: Why are aqueous titrations not suitable for pharmaceutical analysis? use your own words to explain

A: Titration is an analytical method for the quantitative determination of an analyte by adding of…

Q: Suppose a student titrated a sample of monoprotic acid of unknown concentration using a previously…

A: Given, Volume of NaOH (VNaOH) = 24.68mlSts Concentration (MNaOH) = 0.125MVolume of acid…

Q: A sample of antacid was dissolved in 50.00 mL of 0.300 M HCI solution, then back-titrated to the…

A: Amount of HCl reacted with antacid sample can be calculated using back titration.

Q: A 5.0 g impure sample of sodium carbonate was titrated with an acid. The sample utilized 31.55 ml of…

A: Given as MM of Na2CO3 = 106 g/molMM of HCl = 36.46 g/mol Mass of Na2CO3=5.0 g Volume of HCl…

Q: The lead in a 0.2000-g sample is precipitated as PbCrO4. The precipitate is filtered, washed, and…

A: The balanced equations are Pb2+ + 2 CrO42– --------> PbCrO4 (s) 2 PbCrO4 + 2 H+ -------> 2…

Q: In order to calculate the volume of an irregularly shaped container, a chemist added 108.2 g of NaCl…

A: First of all, you need to find the molarity of NaCl solution present in the container. Once you get…

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: A 0.9600 M NaOH solution was diluted with a factor of 4. Then the diluted solution of NaOH was…

A: In order to find whether the given acid is monoprotic, diprotic  or triprotic we first write down…

Q: Consider 0.350 g of an antacid tablet.  Suppose 41.36 mL of 0.1246 M HCl is added to the crushed…

A: Millimoles= concentration *volume (in ml) Millimoles of NaOH = 0.1172*12.78               =1.4978…

Q: A 30.00 ml sample of carbonic acid is titrated to the endpoint with a 0.1000 M potassium hydroxide…

A: Given data,Volume of carbonic acid=30.0mL=0.030LMolarity of KOH=0.100MInitial reading=13.04mLFinal…

Q: 1. (10) The amount of protein in a sample of cheese can be determined by Kjeldahl analysis for…

A: Answer:- this question is answered by using the simple concept of stoichiometry which involves the…

Q: concentration

A:

Q: 2.661 g C4H4O4  is dissolved in H2O and titrated with NaOH. 22.7 mL of a NaOH solution were…

A: Given equation: C4H4O4(aq) +  2NaOH(aq)  → Na2C4H2O4(aq)  +   2H2O(l) The mass of C4H4O4  is…

Q: A 0.917-g sample of canned tuna was analyzed by the Kjeldahl method. A volume of 20.59 mL of 0.1249…

A:

Q: To determine the concentration of some hydrochloric acid, a diver titrated it with 0.200 mol/L…

A: Molarity: To express the concentration of a solution, molarity is used. It is defined as the number…

Q: 0.9600 M NaOH solution was diluted with a factor of 4. Then the diluted solution of NaOH was…

A: (i) Calculation of no. of mol of unknown acid: Calculation of volume of NaOH used: First titration…

Q: A 30.00 ml sample of phosphoric acid is titrated with a 0.050 M magneisim hydroxide solution.  The…

A: Given: Volume of sample = 30.00 mLInitial buret reading = 4.71 mLFinal buret reading = 31.09…

Q: A chemist needs to determine the concentration of a sulfuric acid solution by titration with a…

A: Dilution :-  If a solution of molarity M1 and volume V1 is diluted by adding water to a solution of…

Q: A Na2CO3 standard solution is prepared by transferring 2.4817 grams of primary standard-grade sodium…

A:

Q: 2.413 g sample contains Na2CO3, NaHCO3 and inert material. This sample was solved in water and…

A:

Q: A

A: The  preliminary treatment of water involves the removal of the coarse solids in the wastewater.…

Q: During a titration, it is found that 59.5 mL of a solution of NaOH is needed to neutralize a…

A: At the endpoint of neutralization no of the equivalent of acid =number of the equivalent of base  or…

Q: 1: How many milliliters (mL) of a 0.630 M NaOH solution are needed to neutralize 20.0 mL of a 0.255…

A: Since you have asked multiple type questions, we will solve only first  questions for you. If you…

Q: 2.413 g sample contains Na2CO3, NaHCO3 and inert material. This sample was solved in water and…

A: When a solution mixture of Na2CO3 and NaHCO3 are titrated against HCl solution using…

Q: The following solutions are needed to be prepared for the titration procedure: 1. 20 mL of 2 M HCl…

A: The titration process wherein 1.0867 grams of Fe(OH)n was mixed with the 20 mL of 2 M HCl that you…

Q: The titration below was performed by placing 10.00 mL solution in an Erlenmeyer flask and titrating…

A: The given volume of the basic solution present in the Erlenmeyer flask (V1) = 10.00 ml Molarity of…

Q: A titration analysis was done to determine the arsenic acid (H3AsO4) content of an impure sample.…

A:

Q: 5.00 mL of 1.00 M HCl is added to a flask containing antacid powder dissolved in water. The solution…

A: Sodium hydroxide reacts with hydrochloric acid, to form sodium chloride and water. The equation for…

Q: A CHM 125 student performed the "Redox Titration" procedure as given in the laboratory manual. In…

A:

Q: A 10.00 mL vinegar sample is pipetted into an Erlenmeyer flask and titrated with 24.77 mL of 0.575 M…

A:

Q: Use the following balanced chemical equation to answer the below question: 2H3PO4 (aq) + 3Mg(OH)2…

A: It is given that 14 mL sample of H3PO4 requires 3.51 mL of 0.400 M of Mg(OH)2 for the…

Q: A student adds 20.00 mL of nitric acid (HNO3) of unknown concentration to an Erhlenmeyer flask with…

A:

Q: (b) An impure sample of (COOH)2.2H2O that had a mass of 1.00 g was dissolved in water and titrated…

A: Whenver an acid and base reacts with each other than they form salt and water and the process is…

Q: 20.46 mL of the I2 solution from above is required to titrate a sample containing As2O3. Calculate…

A: Given,  As2O3 + 5(H2O) + 2I2 → 2(H3AsO4) + 4HI   We know,  At STP 1 mol = 22.4 L  According to the…

Q: A standard solution of AgNO3 was prepared by dissolving 7.107 g of pure AgNO3 in sufficient water to…

A:

Q: To determine the mass of calcium carbonate present in a 0.125 g sample of chalk, the chalk sample…

A: Acid-base titrations can be used to find the concentration of unknown acid/base by titrating it…

Q: A chemist needs to determine the concentration of a sulfuric acid solution by titration with a…

A:

Q: A 30.00 ml sample of sulfuric acid is titrated to the endpoint with a 0.1000 M potassium hydroxide…

A: Answer:- This question is answered by using the simple concept of calculation of molarity using the…

Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for