A solution of HClO4 was standardized by dissolving 0.4008 g of primary-standard-grade HgO in a solution of KBr: HgO(s) + 4Br- + H2O → HgBr4 2- + 2OH- The liberated OH2 consumed 43.75 mL of the acid. Calculate the molar concentration of the HClO4 .

Q: Traces of heavy metals, such as Cu* and Pb*", in water bodies can be separated through fractional…

A:

Q: The correct indicator was added to 25.00 mL of a 0.1350 M solution of butanoic acid (CH;(CH2)¿COOH)…

A:

Q: The hardness of water (hardness count) is usually expressed in parts per million (by mass) of…

A:

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

A: Given data is as follows: The mass of oxalic acid = 237 mg = 0.237 g The volume of distilled water =…

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

A: A numerical problem based on quantitative analysis, which is to be accomplished.

Q: 400 mg of a butter sample was heated and some water was added. After shaking and filtration 10 ml…

A: Mass percent of NaCl can be calculated as given below.

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

A: a) from the molarity eqution , M1V1 = M2V2 , we have M1 x 84.3 ml = 2 x 64.6ml x  0.0948  M M1 =…

Q: 3. Traces of heavy metals, such as Cu* and Pb²*, in water bodies can be separated through fractional…

A:

Q: 20 mL of a mixture of ferrous sulfate (FeSO4) and ferric sulfate Fe₂(SO4)3 was titrated with 6.5 mL…

A: In this process at first the permanganate consumed will be for only Fe2+. All Fe3+ will be…

Q: Titration of 0.2342 g of pure Na,C,O, (134.0 g/mol) required 33.45 ml of KMNO, solution according to…

A: Given :-  Mass of Na2C2O4 = 0.2342 g  Molar mass of Na2C2O4 = 134.0 g/mol  Volume of KMnO4 solution…

Q: Titration of 0.2342 g of pure Na,C,O, (134.0 g/mol) required 13.45 ml of KMNO, solution according to…

A: Number of moles = mass/molar mass  Molarity = number of moles/volume of solution (in L)

Q: The solubility of Mn(OH)2 in water is 2 x 10 -4 g/ 100mL. What is the solubility in gram-formula…

A: Given : Solubility of Mn(OH)2 in pure water is 2 X 10-4 g/100 mL Assuming 1 L i.e 1000 g of…

Q: Rashid has performed titrimetric analysis of antacid tablets which solely contain aluminum hydroxide…

A: Since you have asked a question with multiple subparts, we will answer first 3 subparts for you. In…

Q: 6.) 200.0 mL of a 0.435 M Mg(NO3)2 solution was mixed 300.0 mL of 0.715 M NaOH solution. This…

A: Volume of Mg(NO3)2 = 200ml Concentration of Mg(NO3)2 = 0.435M Volume of NaOH = 300ml Concentration…

Q: The active ingredient in a certain toilet cleaner that claims to ‘remove lime scale and rust’ is…

A: Given data,Initial concentration of toilet cleaner (HCl)=1.12 mol/LVolume of toilet cleaner…

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

A: The balanced chemical reaction is given as: H2C2O4 (s) + 2 NaOH (aq) → Na2C2O4 (aq) + 2 H2O (l)

Q: 2. A standard solution of FeCls was prepared and its molar concentration was determined to be 2.000…

A: This is one of the dilution problem, here we are changing concentration of solution. In dilution…

Q: Titration of 0.2342 g of pure Na,C,0, (134.0 g/mol) required 33.45 ml of KMNO, solution according to…

A: Given :- mass of Na2C2O4 = 0.2342 g   Molar mass of Na2C2O4 = 134.0 g/mol   Volume of KMnO4 solution…

Q: The solubility product of a sparingly soluble salt, XF2, was determined by titration and found to be…

A: This means effective concentration of constituent ions in solution. Hence from it we can calculate…

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

A: Given, Volume of Ca(OH)2, V1  =450 mL=450×10-3L=0.450 L Molarity of Ca(OH)2  M1= to find Valency…

Q: A 0.3147-g sample of a primary-standard grade Na2C2O4 was dissolved in dilute H2SO4 and titrated…

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

Q: All arsenic in the mineral containing 20 g of arsenic is dissolved by converting it into As3+.…

A: Working formula Decinormal = one tenth of normality = 0.1 N Normality = Molarity*no of equivalents…

Q: What volume of 0,955 mol·dm–3 HCl solution (in mL or cm3), is required to titrate 2,152 g of Na2CO3…

A:

Q: Oxalic acid (H2C2O4) is present in many plants. If 25.6 mL of 0.0200 M KMnO4 is needed to titrate a…

A:

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

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

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

A: Given-> Weight of oxalic acid = 54 mg = 0.054 gm  (1 gm = 1000 mg) Volume of oxalic acid solution…

Q: the calcium in a 5.00ml serum sample is precipitated as CaC2O4 with ammonium oxalate. the filtered…

A: Number of moles of KMnO4 , n = Molarity x volume in L                                              =…

Q: 4. A 0.5501-g sample of primary-standard-grade Na2CO3 required 35.87 mL of H2SO4 solution to reach…

A: Given,  Mass of Na2CO3 = 0.5501 g  Volume of H2SO4 used = 35.87 mL  Reaction is :  CO32- + 2H+…

Q: molar concentration of the acid

A:

Q: Question attached

A: Given: Mass of Na=26g Volume of Mn(NO3)2 = 0.600L molarity of Mn(NO3)2 = 1M balanced reaction is…

Q: 1. A 0.4126-g sample of primary-standard Na2CO3 was treated with 40.00 mL of dilute perchloric acid.…

A: Given:-           Mole of  Na2CO3 = 0.4126 g/106 gmol = 3.89 mmol Mole of HClO4 neutralize required…

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

A:

Q: 2MnO4- (aq) + 5H2C2O4(aq) + 6H+(aq) → 2Mn+2(aq) + 10CO2(g) + 8H2O(l) In a titration experiment, a…

A: The titration of potassium permanganate with oxalic acid is a redox reaction. In this titration the…

Q: Your objective is to determine the concentration of a solution of acid HA

A:

Q: The SO2 present in air is mainly responsible for acid rain. Its concentration can bé determined by…

A: Molarity of the solution is equal to the number of moles of solute present in one liter of the…

Q: A buffer was prepared by mixing 147.78 g (CH3)3N and 272.37 g (CH3)3NHCI in a solution with a total…

A:

Q: The purity of a sample of sodium oxalate, Na2C2O4, is determined by titrating with a standard…

A: The balanced chemical equation has the number of atoms of the reactants is equal to the atoms count…

Q: Calculate the concentration of cobalt(III) ions in a solution formed by mixing 200 mL of 0.200 M…

A: Initial moles of Co(NO3)3 = 0.200M × 200mL = 40mmoles Initial moles of NH3 = 5.00M ×  250mL =…

Q: A volume of 60 0 mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of…

A:

Q: Rashid has performed titrimetric analysis of antacid tablets which solely contain aluminum hydroxide…

A: The number of moles is given as the mass of a substance upon its molar mass. The molarity of a…

Q: Titration of 0.2342 g of pure Na,C,O, (134.0 g/mol) required 13.45 ml of KMNO, solution according to…

A: Given :- mass of Na2C2O4 = 0.2342 g  Molar mass of Na2C2O4 = 134.0 g/mol   Volume of KMnO4 solution…

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

A: Mass of oxalic acid = 86 mg = 86×10-3 g Molar mass of oxalic acid = 90.034 g/mol Volume of oxalic…

Q: 3. how would the following errors affect the concentration of Cl- obtained in question 2b? give your…

A: Original molarity was 0.02014M.  The student read it as 0.02104M   The student passed the endpoint…

Q: 5 A student performing an iodine titration expected to use a total of approximately 4.8 mL of…

A: Here a student performed iodine titration . For this purpose he had taken Na2S2O3 in burette having…

Q: A solution of oxalic acid dihydrate (H:C:O++2H:0) with a known concentration of 0.400 M H:C2O 2HO is…

A: Given :  Concentration of H2C2O4.2H2O = 0.400 M  Concentration of NaOH = 0.333 M  Volume of…

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

A: Molarity of a solution =Number of moles of soluteVolume of solution in LNaOH + H2C2O4 →Na2C2O4 + 2…

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

A: Given : Mass of oxalic acid = 18mg Volume of distilled water = 250ml

Q: if 25.0g of NaOH is added to 0.750L of 1.00M Cd(NO3)2 how many grams of Cd(OH)2 will be fromed in…

A:

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

A: Solubility product is a product of the concentration of ions with the power when the solution is…