A 60.00 ml of a sample of river water was titrated with 0.0016 M of sodium dichromate and required 12.50 mL of dichromate to reach the end point. What is COD in mg of Oxygen /L?

Q: A chemist weighs out 0.338 grams of a unknown diprotic acid into a 122 volumetric flask and makes a…

A:

Q: An aqueous solution of sodium hydroxide is standardized by titration with a 0.149 M solution of…

A: Given, molarity of hydroiodic acid =0.149 Mvolume of hydroiodic acid used =24.1 mLvolume of sodium…

Q: An aqueous sample of 25.0 mL H2SO4 is neutralized by the addition of 28.9 mL of 0.203 M KOH.  What…

A: The neutralisation reaction taking place will be 2 KOH + H2SO4 ------> K2SO4 + 2 H2O

Q: Imagine your instructor gave you a solution of carbonic acid (H2CO3) and asked you to determine the…

A: The number of the moles of solute to the volume of solution in liters is known as molarity.

Q: 7.7 g of citric acid (MM = 192.1 g/mol) can be titrated with NaOH according to the following…

A: By stoichiometry of reaction : At equivalent point : Moles of H3C6H5O7 = Moles of NaOH  given mass…

Q: Potassium acid phthalate, KHC6H4O4, or KHP, is used in many laboratories, including general…

A: The number of moles of potassium acid phthalate is calculated as shown below. The number of moles of…

Q: What volume of 0.145 MM HClO4HClO4 solution is needed to neutralize 49.00 mLmL of 8.55×10−2 MM…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Aspirin is a monoprotic acid called acetylsalicylic acid. Its formula is HC,H,04. A certain pain…

A:

Q: A 10.00 mL sample of hydrochloric acid is diluted by adding 50 mL of deionized water, and then…

A: Given that : Volume of HCl after dilution (V1) = 10.00 mL + 50 mL = 60 mL Volume of NaOH (V2) =…

Q: You are preparing a NAOH solution for use with an acid-base titration experiment. You weighed out…

A: Given ;-  Mass of NaOH = 1.321 g  Volume of solution = 246.9 mL  Molar mass of NaOH = 40.00 g/mol To…

Q: The vitamin C (ascorbic acid, C6H8O6) content of Gatorade and other sports beverages can be measured…

A: The given reaction is,

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: An aqueous solution of sodium hydroxide is standardized by titration with a 0.136 M solution of…

A: Given: Molarity of HI acid = 0.136 M Volume of HI acid = 22.2 mL Volume of NaOH base = 12.6 mL Find…

Q: An impure sample of potassium hydrogen phthalate (KHP) was titrated to determine the percent…

A: We will use stoichiometry of the reaction to get the answer.

Q: An aqueous solution of potassium hydroxide is standardized by titration with a 0.190 M solution of…

A: Given : Concentration of hydrochloric acid i.e HCl = 0.190 M Volume of potassium hydroxide i.e KOH…

Q: A 0.411 g sample of potassium hydrogen phthalate, KHC8H4O4 (molar mass = 204.22g/mol), is dissolved…

A: Calculation of moles for KHC8H4O4:

Q: In a titration reaction 20.00mL of 0.500M KOH reacts completely with 12.55 mL of sulfuric acid, what…

A: Molecular reaction between KOH and H2SO4 . 2KOH(aq)+H2SO4(aq)→K2SO4(aq)+2H2O (l) From this reaction…

Q: An aqueous solution of hydroiodic acid is standardized by titration with a 0.171 M solution of…

A: Given : Concentration of barium hydroxide i.e Ba(OH)2 = 0.171 M Volume of Ba(OH)2 required = 23.1 mL…

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: A 5.00 ml sample of vinegar was titrated with 0.08751 M NAOH. The sample requires 22.31 mL of NaOH…

A:

Q: An aqueous solution of hydroiodic acid is standardized by titration with a 0.146 M solution of…

A: Given, volume of barium hydroxide = 20.2 mL =  ( 20.2 mL × 1 L/1000mL) = 0.0202 L molarity of barium…

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: 4. A student analyzed an antacid tablet from a bottle of 48 tablets purchased at a discount store…

A:

Q: If 25.00 mL of 0.5348 M HNO3 is added to an antacid tablet and the excess HNO3 requires 38.34 mL of…

A: Given : Concentration of NaOH used = 0.1027 M Volume of NaOH solution required to neutralise excess…

Q: A 25.0-mt sample of an unknown H2CO3 solution requires 45.3 mL of 0.101 M NaOH for complete…

A: Given :  Volume of H2CO3 solution = 25.0 ml  Volume of NaOH solution = 45.3 ml  Molar concentration…

Q: 0.3043 g of pure KHP was weighed out and titrated to an end point with 15.12 mL of a NaOH solution…

A: Neutralization reaction between KHP (C8H5KO4) and NaOH is given below,

Q: In an acid-base titration, you were given with a 0.1050 M sodium hydroxide solution placed in a…

A:

Q: You titrated a 25.00 mL solution of 0.0800 M oxalic acid with a freshly prepared solution of KMnO4.…

A: The expression to calculate the unknown values from the known values is given by, M1V1=M2V2 where M…

Q: A student prepared a Kool-Aid solution from 1.3151 g of Kool-Aid in a 100mL volumetric flask. In an…

A: The concentration of citric acid in 100 mL of prepared solution of Kool-Aid is determined as…

Q: A 1.2516 gram sample of a mixture of CaCO3 and Na2SO4 was analyzed by dissolving the sample and…

A: A 1.2516 gram sample of a mixture of CaCO3 and Na2SO4 was analysed by dissolving the sample and…

Q: To do a titration (neutralization), a student started with 18.25 ml NaOH in a buret with a…

A:

Q: What volume of a 0.462 M NaOH solution would be required to titrate 2.85 g of pure KHP

A: In acid base titration, all H+ neutralised by OH- . Here from mass of KHP we can determine moles of…

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: 1. a: A sample of 8.5 mL H,SO, is titrated with 18.5 mL of 0.35 M Ca(OH),. What is the concentration…

A: Answer : Molarity and volume of solution con be calculated as follows

Q: An aqueous solution of hydroiodic acid is standardized by titration with a 0.141 M solution of…

A: 2HI (aq)  +    Ca(OH)2 (aq)  ------>   CaI2 (aq)  +  2H2O This equation shows that 2 mols of HI…

Q: Titration of 0.2121 g of pure Na2C2O4 (134.00 g/mol) required 43.31 mL of KMnO4. What is the molar…

A: From the given reaction, it is clear that 2 mol of MnO4- reacts with 5 moles of C2O42-to form the…

Q: You are given a solution of HCOOH (formic acid) with an approximate concentration of 0.20 M and you…

A: Chemical reaction:                             NaOH + HCOOH  →   HCOONa + H2O From well-balanced…

Q: 7. A 1.50 ml sample of sulfuric acid solution from a car storage battery is titrated with 1.47M…

A:

Q: A 25.00 mL sample of a vinegar solution is diluted to 250.00 mL with water. Then a 25.00 mL aliquot…

A: Molarity of NaOH = 0.1027 M Volume of NaOH = 22.13 mL Volume of Vinergar = 25 mL

Q: 2. What is the N of an HCl solution if 25.03 mL of it requires 29.07 mL of 0.1025 N NaOH for…

A: The dilution law is shown below: N1V1 = N2V2 Where; N1 = normality of known solution V1 = volume of…

Q: A solution of tartaric acid(H₂C₄H₄O₆)with known concentration of 0.155 M H₂C₄H₄O₆ is titrated with a…

A: The balanced reaction taking place is given as, => H2C4H4O6 + 2 NaOH → Na2C4H4O6 + 2 H2O Given:…

Q: A sample of solid Ca(OH)2 was stirred in water at a certain temperature until the solution contained…

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Q: A chemistry student needs to standardize a fresh solution of sodium hydroxide. He carefully weighs…

A:

Q: A 10.00 ml sample of a solution of hydrofluoric acid, HF, is diluted to 500.00 ml. A 20.00 ml…

A: At equivalence point the molarity of both HF and NaOH becomes equal in the titrated solution. From…

Q: A solution of malonic acid, H2C3H2O4H2C3H2O4 , was standardized by titration with 0.1000 M NaOHNaOH…

A: Balance chemical equation :  H2C3H2O4+2NaOH→Na2C3H2O4+ 2H2O  Given data :  M2= 0.1000 M  V2 = 21.68…

Q: A chemistry student needs to standardize a fresh solution of sodium hydroxide. He carefully weighs…

A:

Q: A solution was made by adding water to 0.293 g of H2ZH2Z until the volume totaled 25.00 mL.…

A: The chemical reaction taking place: H2Z(aq) + 2NaOH(aq) → Na2Z(aq) + 2H2O(l) The given information…

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

A:

Q: A 0.4040-g sample of potassium hydrogen phthalate, KHC8H4O4 (molar mass = 204.44 g/mol) is dissolved…

A: The molar concentration is the molarity of solution which is defined as a number of moles of solute…

Q: A solution of malonic acid, H2C3H2O4H2C3H2O4 , was standardized by titration with 0.1000 M NaOHNaOH…

A: Given measurements values, Molarity of NaOH = 0.1000M ,volume=20.19 mL  Molarity of malonic acid = ?…

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.