0.300 g of a nitrogen-containing sample is analyzed by the Kjeldahl method and the released ammonia is collect in boric acid. The resulting solution (borate) is titrated with 0.100 M HCl consuming 25.0 mL. What is the percentage of nitrogen in the sample?

Q: For this pr H2 SO4(aq) + 2 N2OH(aq) → Na2 SO4(aq) + 2H20(1) A titration is performed on a sample…

A: Answer: Strength of the H2SO4 = 1.81 M

Q: An aqueous solution of hydroiodic acid is standardized by titration with a 0.190 M solution of…

A: Molarity of calcium hydroxide, M1 = 0.190 M Volume of calcium hydroxide required for neutralization,…

Q: A second analyst was attempting to determine the percent KHP in an unknown sample, similar to that…

A: From the given molarity of NaOH, number of moles of NaOH can be calculated followed by the…

Q: A solution of malonic acid, H2C3H2O4, was standardized by titration with 0.1000 M NaOH solution. If…

A: The neutralization reaction is said to be the reaction in which reaction of the species acid and the…

Q: To determine the amount of Cl in an unknown sample, a NaCl sample was titrated with the titling…

A: Number of moles=massmolar mass From the given information, AgNO3 + NaCl → NaNO3 + AgCl Mass of…

Q: A hydrochloric acid solution is standardized by titrating 0.4541 g of primary standard…

A: Given:The mass of primary standard tris(hydroxymethyl)aminomethane = 0.4541 g. Volume = 35.37 mL =…

Q: The amount of protein in a sample of cheese is determined by a Kjeldahl analysis for nitrogen. After…

A: Here we have to determine the mass percentage of protein present in sample of cheese in the…

Q: What is the concentration of NaCl in a solution if titration of 50.00 mL of the solution with 0.1500…

A:

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

A: Considered that 250 mL of oxalic acid solution is neutralized by the 46.1 mL of sodium hydroxide…

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: 1. A sample of an aspirin tablet weighing 78.79 g was titrated with 56.39 mL of a standardized…

A: Here a sample of aspirin tablet of mass 78.79 g was titrated with 56.39 ml of 0.7406M Ba(OH)2…

Q: A 0.217 g sample of HgO (molar mass = 217 g/mol) reacts with excess iodide ions according to the…

A: Reaction occurs according to law of chemical equivalency. Number of mols of any substance  =( weight…

Q: A titration experiment required 34.30 mL of NaOH, which had a concentration of 0.275 M, to reach he…

A: Given : Volume of NaOH = 34.30 ml  Volume of H2SO4 = 15 ml  Molarity of NaOH = 0.275 M

Q: In the experiment conducted to determine the amount of acetic acid in vinegar, 8.2 mL of a 0.098 M…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

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: 15. The alcohol content in a 10.0 g sample of blood from a driver required 4.23 mL of 0.07654 M…

A: The alcohol content in a 10.0 g sample of blood from a driver required 4.23 mL of 0.07654 M K2Cr2O7…

Q: A solution of citric acid (H3CgH;O,) with a known concentration of 0.200 M H;C,H;O, is titrated with…

A: Given,Concentration of citric acid = 0.200 MVolume of Citric Acid = 25 mLMoles of citric acid =…

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

A:

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: 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: 4. A solution of malonic acid, H2C,H,O4, was standardized by titration with 0.1000 M NAOH solution.…

A: Molarity of Malonic acid can be calculated as follows

Q: A solution of tartaric acid (H2C,H,O6) with a known concentration of 0.155 M H2C,H,O6 is titrated…

A: Given, H2C4H6O6+2NaOH→Na2C4H4O6+2H2OK. Concentration of tartaric acid = 0.155M Concentration of…

Q: In a titration, 20.0 g of oxalic acid dihydrate was dissolved in a flask and neutralized with 31.2…

A:

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

A:

Q: A 4.500-g sample containing sodium carbonate (105.99 g/mol) and other impurities is titrated with…

A:

Q: The organic matter in a 3.776-g sample of a mercuric ointment is decomposed with HNO3. After…

A: Accoding to given reaction: Hg2++ 2SCN- ----> Hg(SCN)2(aq)stoichiometric ratio = 1 mol Hg2+/2 mol…

Q: Lactic acid, HC3H5O3, is a monoprotic acid that forms when milk sours. An 18.5 mL sample of a…

A: Molarity of the solution is equal to the number of moles of solute that can be dissolved in per…

Q: 10.00-mL sample of dilute sulfuric acid, H2SO4, is titrated with 0.2540 M NaOH solution and 35.20 mL…

A:

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: A sample of solid Eu(OH)3 was stirred in water at a certain temperature until the solution contained…

A: The concentration of hydroxide ion (OH-) in the solution is determined as follows.…

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

A: HClO4 is a strong acid, it reacts with magnesium hydroxide Mg(OH)2 , this is an acid base reaction.…

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

A:

Q: A local company sent you their green alternative for window cleaner to be tested for percent (w/v)…

A: Titration question

Q: What is the concentration of NaCl in a solution if titration of 50.00 mL of the solution with 0.1500…

A:

Q: A 2.2004 g of primary standard oxalic acid, H2C2O4 (90.04 g/mol), was dissolved in water to form a…

A:

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 5.00-mL sample of vinegar was pipetted into a flask, two drops of phenolphthalein indicator were…

A: Given-> Volume of sample = 5.00 ml Volume of NaOH = 45.62 ml Molarity of NaOH = 0.1008 M Density…

Q: A 19.95−mL sample of HCl of unknown concentration was transferred to a flask, a few drops of the…

A: The neutralization reaction of HCl and NaOH is given as:HCl (aq) + NaOH (aq) → NaCl (aq) + H2O…

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

A:

Q: The chloride ion content of a 250.0-mL seawater sample was titrated against 0.1102 M silver nitrate,…

A: Given values: Volume of chloride solution= 250 mL Molarity of silver nitrate = 0.1102 M Volume used…

Q: 6.6 When a 0.3885 M HCI solution is used to titrate 6.7 ml of a borate solution, the initial volume…

A:

Q: A 4.500-g sample containing sodium carbonate (105.99 g/mol) and other impurities is titrated with…

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 = ?…

Q: A sample of soda ash (impure NazCO3) is titrated with 0.5000N H2SO4. If the sample weighs 1.100 g…

A:

Q: An aqueous solution of hydrolodic acid is standardized by titration with a 0.181 M solution of…

A: Titration is a popular method where the concentration of an unknown solution is determined by a…

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