What is the mass of sodium oxalate (Na2C2O4, MM = 134,00 g/mol), in mg, should be taken so that in its titration 25,00 mL of a solution of potassium permanganate (KMnO4) 0,032 mol/ L in strong acid medium?   21,4 mg 268 mg 536 mg 107 mg 134 mg

Q: A solution of sodium hydroxide is standardized against potassium hydrogen phthalate (molecular mass…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

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

A: The reaction of oxalic acid and NaOH is: H2C2O4 +2NaOH →Na2C2O4 + 2H2O

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

A: Answer  In the titration reaction of oxalic acid and sodium…

Q: molar concentration of the NaOH solution?

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

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Q: Acetic acid reacts with sodium hydroxide in the following fashion.  HC2H3O2(aq) + NaOH(aq)     →…

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Q: ou are given a sulfuric acid solution of unknown concentration.  You dispense 10.00 mL of the…

A: Titration is one of the most common method of qualitative analysis of substances given. It is done…

Q: A 4.500-g sample containing sodium bicarbonate (NaHCO3, 84.01 g/mol) and other substances is…

A: We will use the balanced neutralization reaction to find out the moles of NaHCO3, that are getting…

Q: 12.47 mL of a 0.33 M KMnO4 was used

A: From the balanced chemical reaction,  Geq. of KMnO4= Geq. of C2O42- N1V1 = N2V2 0.33 × 12.47× 5…

Q: Calculate the molarity of an acetic acid solution, HC2H3O2(aq), if a 50.0 mL sample requires 45.6 mL…

A: molarity is concerned with the moles of a solute in relation to the volume of a solution.…

Q: A 10.0 sample of vinegar (acetic acid) is titrated with a 0.495 M NaOH solution. End point is…

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

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Q: You are preparing standard acid and base solutions for the laboratory, using potassium hydrogen…

A: Here we are using KHP (1.55 g) to standardize NaOH solution.  After standardization of NaOH…

Q: To determine the amount of a hypothetical compound KHA · H2A 2H2O in a pure sample, Senku asked his…

A: The compound KHA.H2A.2H2A has a total of 3 protons(H+). Hence it is a triprotic acid. #(a): Given…

Q: The flask contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains…

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Q: You have been provided with a 35.0 mL sample of hydrochloric acid (HCl) of unknown concentration.…

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

A: First, we need to calculate the number of moles of oxalic acid (H2C2O4) used. The molar mass of…

Q: Which of the following resonance structure for OCN- will contribute most  to the correct structure…

A: To determine which of the given resonance structure of OCN- contribute most in the strucute of OCN–

Q: A technician would like to standardize an unknown Ca(OH)2 solution. It takes 33.71 mL of a 0.155 M…

A: Given: The volume of Ca(OH)2 is 25.00 mL. The volume of HCl is 33.71 mL. The molarity of HCl is…

Q: What is the nickel ion concentration in a solution prepared by mixing 381 mL of 0.395 M nickel…

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

A: Acid–base titration : It is a method of determining the concentration of an acid or base by…

Q: One of the main acidic components of acid rain is sulfuric acid, H2SO4 . Assuming sulfuric acid is…

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Q: A Ba(OH)2 solution is standardized against potassium hydrogen phthalate (KHP). The titration of…

A: Given: Mass of KHP used = 0.5781 g. Volume of Ba(OH)2 required = 30.50 mL = 0.03050 L…

Q: A technician would like to standardize an unknown Ca(OH)2 solution. It takes 27.07 mL of a 0.172 M…

A: Number of moles of HCl = 0.02707 L × 0.172 mol/L  = 0.004656 mol  2HCl + Ca(OH)2 ---> CaCl2 +…

Q: A tablet contains 0.5 g of magnesium hydroxide as the only basic ingredient . The tablet is analysed…

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

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Q: Titration of a 25.00 mL sample of acid rain required 12.4 mL of 0.009879 M NaOH to reach the end…

A: Volume of sulphuric acid,V1 = 25.00mL Volume of NaOH,V2 = 12.4mL Concentration of NaOH,M2 =…

Q: A solution of HBr with a volume of 25.00 mL is titrated to the endpoint, with 0.550 M Ba(OH)2. If it…

A: 2HBr(aq) + Ba(OH)2(aq) --> 2H2O(l) + BaCl2(aq)For HBr Solution,Concentration of HBr solution =…

Q: concentration of hydrogen peroxide in a solution is determined by titrating a 10.0-mL sample with…

A: Volume of hydrogen peroxide = 10.0 mlVolume of Ca(MnO4)2 = 16.8 mlMolarity of Ca(MnO4)2 = 0.0620 M

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

A: Given: The mass of oxalic acid = 350 mg The volume of the oxalic acid solution = 250 mL The volume…

Q: 4. 25.00 mL a phosphoric acid solution is titrated with 0.250 M Sr(OH)2 solution. If it takes 32.00…

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Q: You have been provided with a 2.13 x 10-2 L  sample of lithium hydroxide (LiOH) of unknown…

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Q: Acetic acid reacts with sodium hydroxide in the following fashion.HC2H3O2(aq) + NaOH(aq) → H2O(l) +…

A: Given  Volume of acetic acid ( V1 )  =  2.50 mL                                               =…

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

A: Here we are required to find the Molarity of sodium hydroxide solution required for standardization…

Q: What is the molarity of the sodium sulfate in the solution resulting from the addition of 100. mL of…

A: It is one of the most widely used unit of concentration and is denoted by M. It is defined as no. of…

Q: that contains 0.015 M Ni2+ ions and 0.015 M Ca2+ ions. You slowly add Na2CO3 to the solution. What…

A: Solubility equilibrium is a type of dynamic equilibrium that exists when a chemical compound in the…

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

A: First, we need to calculate the number of moles of oxalic acid (H2C2O4) used. The molar mass of…

Q: The concentration of SO42– ions in a 45.0 mL sample of seawater is determined by adding a solution…

A: Given information: Mass of barium sulfate = 0.315 g Volume of sample = 45.0 mL or 0.045 L

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

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Q: 2MnO4— +  5C2O42— + 16H+ 2Mn2+ + 10CO2 + 8H2O A solution of KMnO4 was prepared and 50.99 mL was…

A: Dear student, As you have asked multiple question but according to guidelines we will solve first…

Q: 1. (a) The solubility product of a sparingly soluble salt, XF2, was determined by titration and…

A: General titration equation is  M1V1=M2V2  M-> MolarityV->Volume in this question the titre is…

Q: the ascorbic acid found in one 500.0 mg tablet. What is the percent vitamin C by mass in the tablet?

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Q: A solution of hydrogen peroxide was titrated with a solution of potassium permanganate (see…

A: Number of moles of the substance is equal to the ratio of mass to molar mass of substance. Number of…

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

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Q: A sample weighing 1.731g contains a mixture of the triprotic citric acid, H3C6H5O7 and sodium…

A: Given, Mass of the mixture = 1.731 g Molarity of sodium hydroxide, NaOH = 0.3550 M = 0.3550 mol/L…

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

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

A: The reaction of oxalic acid and NaOH is H2C2O4 +2NaOH →Na2C2O4 + 2H2O

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