KMnO4 and Na2C2O4 solutions were used in the reactions that took place in a back titration to determine the amount of H2O2 in a sample. Calculate the concentration of H2O2 in the sample (w / v) as% by making appropriate assumptions for the volumes and normality of all these solutions.

Q: 11. Calculate the normality of a potassium dichromate solution prepared by placing 9.67 grams of…

A: In this question, we will determine the normality of K2Cr2O7 from the given mass of potassium…

Q: I wish to prepare 500.0 mL of a 825.0 ppm w/v Fe2+ (MW=55.845 g/mol) solution. How many grams of…

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

Q: A student dissolves 12.4 g of sodium hydroxide (NaOH) in 200. g of water in a well-insulated open…

A: The reaction is Exothermic.

Q: A 5.17 molal aqueous nitric acid solution was prepared. (Density of nitric acid = 1.51 g/mL, density…

A: Molality = Number of moles of solute/Mass of solvent in Kg Concentration (%v/v) = 100 x Volume of…

Q: A 220 ml solution of CMC agar contains 84.99 µg NaNO3 and 174.18 µg K2HPO4, respectively. Determine…

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Q: Some ionic components of seawater are given in the following table: wt Cation Wt.% Anion Na 1.06 1.9…

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Q: A 15.0% by weight solution was prepared using 90.0g of KCl and the resulting density of the solution…

A: Given % by weight = 15 % Mass of solute = 90.0 g Density of solution = 1.101 g/ml

Q: The partial molar volumes of two liquids A (M = 241.1 g mol1) and B (M = 198.2 g mol1) in a mixture…

A:

Q: To prepare 100ml of O.2M from the stock solution (10M) we need to dilute 4ml of the stock solution…

A: Molarity is the unit of concentration of a solution, and its unit is mol/L. It is defined by the…

Q: 200g of iron) ntrate (MW= 241.86g/mole) is added to 225.0g of watel (MVV determine the mole fraction…

A: Iron (II) nitrate dissolved in the water to give ferric ion and nitrate ion. The balanced equation…

Q: The mercury content of a stream was believed to be above the minimum considered safe—1 part per…

A: Given: Concentration= 0.68 parts per billion Volume of water= 15.0 L Density= 0.998 g/ml

Q: In class, we derived the expression: ln XA =(ΔvH/R) ((1/T)-(1/T°)) where A represents the solvent…

A: Interpretation-  To drive the expression which is given as ∆Tb = XB (RT°2/ΔvH) by using the equation…

Q: The solubility in water of ionic compound X is measured and found to be 28.2 g at 10. °C. Calculate…

A: Given: Solubility of water in the ionic compound is 28.2 g/L. Mass of saturated solution  = 45.0 g.

Q: A student dissolves 14.6 g of ammonium chloride (NH,CI) in 250. g of water in a well-insulated open…

A:

Q: A student used 10 mL water instead of 30 mL for extraction of salt from mixture. How may this may…

A: Solubility of substance is defined as mass of  solute dissolve per liter of the solution.

Q: Calculate the equivalent weight of KMnO₄ in the following reaction: MnO₄⁻ + CN⁻ + H₂O ⟶ MnO₂ (s) +…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Calculate the molar concentration of the polycyclic aromatic hydrocarbon (PAH), anthracene (178.23…

A: We have to calculate the molar concentration of water .

Q: A solution of 75 mM tartaric acid (CaH,O6) in water is used as a standard in HPLC analysis. How many…

A: We know that 1 molar solution stands for 1 mole solute is dissolved in 1 litre solution.  Now, we…

Q: One particular pungent gas is the toxic hydrogen sulphide (H2S). Hydrogen sulphide develops an odour…

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

Q: Prepare 0.1N H2SO4 solution of 250ml volume. (Density of H2SO4 is 1.84 and purity is 98 %)

A: We are givenH2SO4 purity=98% i.e in 100 gm of solution H2SO4 present =98 gm

Q: Determine the mole fraction of acetone in a 1.00 m solution of acetone (CH3COCH3) dissolved in…

A: Given-> Molality = 1.00 m Density of acetone = 0.788 g/cm3 Density of ethanol = 0.789 g/cm3

Q: One particular pungent gas is the toxic hydrogen sulphide (H2S). Hydrogen sulphide develops an odour…

A:

Q: Find the normality of 0.0294 g K2Cr2O7 (MM = 294.19) dissolved in 125 mL solution.

A:

Q: molarity of glucose

A: Hi, Since you have posted multiple questions, we are entitled to solve first question only. If, you…

Q: How many moles of solute particles are present in 1.64 mL of 0.458 M K2SO4?  (the answer is 2.25E-3…

A:

Q: Q5:Calculate the grams of each substance requied to prepare the follow. solutions:(a)250 ml of 0.1 M…

A: As per rule, allowed to answer first question and post the remaining in the next submission. 5) a)…

Q: A student dissolves 12.8 g of potassium hydroxide (KOH) in 250. g of water in a well-insulated open…

A: Energy is released during the reaction then such reaction is called exothermic reaction. If energy…

Q: By pipot the stock solution of potassium permanganate (KM 1 O 4 ) from Question was transferred to…

A: The concentration of the resulting solution after dilution of stock solution can be calculated using…

Q: Suppose you have 5M NaCl stock solution and you perform a six-step serial dilution by taking 100 µl…

A:

Q: Calculate the molar concentration of the polycyclic aromatic hydrocarbon (PAH), anthracene (178.23…

A: Given: Concentration of well water sample = 2.18 ppb Density of well water sample =1.00 g/mL To…

Q: Supplement tablets containing 50 mg of Mg-" each are sold to bolster bone health and muscle…

A: Given: Amount of Mg2+ in each supplement tablet = 50 mg Hardness value of water in terms of CaCO3 =…

Q: The mercury content of a stream was believed to be above the minimum considered safe—1 part per…

A: Given: Concentration= 0.68 parts per billion Volume of water= 15.0 L Density= 0.998 g/ml

Q: How many (a) millimoles, (b) milliequivalents, and (c) milliosmoles of calcium  chloride (CaCl2 .…

A: How many (a) millimoles, (b) milliequivalents, and (c) milliosmoles of calcium  chloride…

Q: The resultant solution had a freezing point of 177.9 °C when 0.270 g of the solute was dissolved in…

A: The freezing point depression (ΔTf) is related to the molality (m) and the freezing point depression…

Q: A standard solution of NaOH as prepared by dissolving 4g of the solute in 250cm3. A) determine the…

A:

Q: 6.30 L of 0.262 M NaOH from the concentrated commercial reagent [50% NaOH (w/w), sp gr 1.525]. Take…

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Q: Normality of 100 mL of 1.17% (w/v) CaC12 is . .

A: Normality is defined as the gram equivalent of solute dissolved in a liter of solution. The formula…

Q: y pipet, 5.00 mLmL  of a 0.823 MM stock solution of potassium permanganate (KMnO4) was transferred…

A:

Q: I  wish to prepare 500.0 mL of a 800.0 ppm w/v fluoride (MW = 18.9984 g/mol) solution. a.)How many…

A: a) First calculate the mass fluoride in 500mL solution then it is used to determine the moles…

Q: Calculate the normality of 0.2M Na2CO3 (M.wt = 106).

A: Normality is a measure of concentration  equal to the gram equivalent weight divided by volume of…

Q: The need arises in a laboratory for 5000cm3 of an antifreeze solution consisting of 50mol% of HCl in…

A: The solution is given below in the image provided

Q: What is the primary standards and its amounts, and indicators used for the Volumetric Solution (VS):…

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Q: What is the kinetic property observed in suspension? What is the optical property observed in…

A: It is a heterogeneous mixture of solid particle suspended in a solvent.  The solid particles are…

Q: In a process plant, benzene is evaporating and is leaking into an air stream at the rate of 0.1 kmol…

A: Given: Rate of benzene flow in air = 0.1 Kmol/hour. And Rate of air flow = 8000 Kg/min.

Q: Osmotic pressures are often reported in units of atmospheres or mm Hg. The latter implies that the…

A: One torr is approximately equal to the pressure required to raise the column of mercury by 1 mm.…

Q: 5 mL of HCl and 5 mL of CH3COOH solutions are titrated with a pipette in a glass bottle and 150 mL…

A: Given data:

Q: a 25.00 mL aliquot of vinegar was diluted to 250 mL in a volumetric flask. Titration of 50.00 mL…

A:

Q: Calculate the resulting concentration of a solution prepared by diluting 20.00 mL of concentrated…

A: Given: Volume of concentrated HCl solution = 20.00 mL. Volume of diluted HCl solution = 500.0 mL…