If 1.000ml of a solution of KMnO4 is equivalent to 0.1000mmol of sodium formate (HCO2Na) in the following titration: 2HCO2 - + 2MnO4 - + H2O → 3CO2 + 2MnO2 + 5OH- , what is the value of the KMnO4 in terms of grams of CaO in the volumetric method for calcium in which that element is precipitated as CaC2O4•H2O, the precipitate filtered and dissolved in dilute H2SO4, and the oxalate titrated with permanganate

Q: In an alkalinity titration of a 100.0 mL sample of water from a hot spring, 2.56 mL of a 0.0395 M…

A: Given : Volume of sample = 100ml Volume of HCL = 2.56ml molarity of HCL = 2.5ml First equivalence…

Q: The half‑equivalence point of a titration occurs half way to the equivalence point, where half of…

A: The balanced equation for the reaction of weak monoprotic acid, HA(Ka = 5.4*10-5) with NaOH(aq) is:…

Q: The solubility (So) of Drug x free acid in water is 0.006M.The total concentration of Drug x (free…

A: Given that -  Concentration of free acid in drug = 0.006M  Concentration of free acid + salt in drug…

Q: in an experiment, the molecular formula for calcium hydroxide was determined to be Ca(OH)2. In this…

A: Given that : The mass of Ca = 0.050 g The volume of DI water = 150 mL The molarity of HCl = 0.30 M

Q: The pK, of hypochlorous acid is 7.530. A 51.0 mL solution of 0.109 M sodium hypochlorite (NaOCI) is…

A:

Q: y a stoichiometric calculation, determine the pH of a buffer solution prepared by dissolving 25.5 g…

A: To determine the pH of the buffer solution.

Q: At the equivalence point for the titration of HCN with KOH, the pH is expected to be A) 7 B) greater…

A: To expect the PH

Q: = aboard the ship, in the botany lab, Mr. Sulu is performing a titration on a weak acid he has acted…

A:

Q: The half‑equivalence point of a titration occurs half way to the equivalence point, where half of…

A: Given data: Moles of acid=0.220 Acid is monoprotic which gives only one H+. HA→H+ + A- Ka = 5.1×10-5…

Q: [20] ml of [4] M HC2H3O2 is titrated with 2.25 M sodium hydroxide. Ka for HC2H3O2 is 1.8 x 10-5 a.…

A: Since you have posted questions with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: A student titrates an unknown weak acid, HA, to a pale pink phenolphthalein endpoint with 25.0 mL of…

A: •first acid and base react completely to form salt NaA. • Then NaA react with HCl to form HA and…

Q: In an alkalinity titration of a 100.0 mL sample of water from a hot spring, 2.56 mL of a 0.0315 M…

A: At the first equivalence point, the reaction can be given as follows: HCl+CO32-→HCO3-+Cl- From the…

Q: The pKa of hypochlorous acid is 7.530. A 56.0 mL solution of 0.126 M sodium hypochlorite (NaOCl) is…

A:

Q: 8

A: Given   The value of pH is 4.13.

Q: In an experiment of determination the neutralizing capacity of an antacid (Maloox) ,5 ml of antacid…

A: After the neutralization of HCl with an antacid , when titration was done with NaOH, the endpoint…

Q: Account for the shape of the curve beyond 25mL. The pH at the equivalence point for this titration…

A: Given a titration curve. It is the graph of pH of the solution vs volume of the titrant. Account for…

Q: The pK, of hypochlorous acid is 7.530. A 59.0 mL solution of 0.114 M sodium hypochlorite (NaOCI) is…

A:

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

A: Given: Mass of magnesium hydroxide i.e. Mg(OH)2 in 1 tablet = 0.5 g Concentration of stock HCl…

Q: You have75.0 mL of a 0.25M solution of a weak base, ethanol amine, HOC2H4NH2, with a kb= 2.8x10^-5.…

A: Given data:

Q: Calculate the pH at the equivalence point in titrating 0.078M solutions of each of the following…

A:

Q: The half‑equivalence point of a titration occurs half way to the equivalence point, where half of…

A: The question is based on the concept of titrations. we are reacting a weak acid and strong base. We…

Q: The half-equivalence point of a titration occurs half way to the equivalence point, where half of…

A:

Q: The pH values from the CH3COOH-NaOH titration solution and the HCl-NaOH titration solution are…

A: The titration of strong acid Vs strong base, The initial pH is usually low and may be calculated…

Q: In the following example, by changing the titration conditions on a weak acid as compared to a…

A: A question based on acid-base titration, which is to be accomplished.

Q: A buffer solution that is 0.473 M in HCN and 0.473 M in NaCN has a pH of 9.40. The addition of 0.01…

A: pH of buffer is given by Henderson-Hasselbalch equation- pH = pKa + log[Conjugate base][Acid]

Q: A plot of pH vs volume of 0.05 M NaOH solution was obtained for titrating 0.4055 g of a dried solid…

A: The plot of pH vs volume of 0.05 M NaOH solution given is as,

Q: For a weak base/strong acid titration, is the pH at the equivalence point , or equal to 7?

A: Note: Since, it's not notified which question to solve. I am solving only third question.  Answer: 3…

Q: In the titration of a 30.0-mL sample of 0.115 M H2C6H6O6 with 0.130 M LIOH, where Ka, H2C6H6O6 =…

A: Half equivalence point means the concentration of acid and salt are equal ([Acid] = [salt]).…

Q: Calculate the pH for the titration of 50.00 mL of 0.0500 M NaCN with 0.1000 M HCl after addition of…

A: Given: CN⁻ + H₃O⁺ -> HCN + H₂O  The objective is to calculate the pH for titration of 50.00mL of…

Q: Explain (molecularly) why in the titration of a weak base with strong acid, the titration curve is…

A: In the given question we have to analyze the titration curve of weak acid with strong base. pH of…

Q: In an alkalinity titration of a 100.0 mL sample of water from a hot spring, 2.56 mL of a 0.0365 M…

A: The first and second second equivalence point can be described by the following reactions: HCl +…

Q: A buffer is prepared by adding 10.0 g of ammonium chloride(NH4Cl) to 250 mL of 1.00 M NH3 solution.…

A:

Q: capitalization. Titration of (5.15400x10^-1) grams of monoprotic weak acid (dissolved in KCI)…

A:

Q: 30 cm3 of 0.5 M solution of weak monoprotic acid titrated with 10 cm3 of a 1 M NaOH solution. If the…

A:

Q: The mineral tri-magnesium phosphate (Mg3(PO4)2, denoted TMP) is widely used in the pharmaceutical…

A: 1.) Reaction is: 3 Mg Cl2 + 2 K2HPO4 = Mg3(PO4)2 + 4 KCl + 2 HCl Moles of Mg Cl2=0.5 x 0.2=0.1 moles…

Q: Determine the mass of solid NaCH₃COO that must be dissolved in an existing 500.0 mL solution of…

A: Given that, Ka for CH₃COOH is 1.8 × 10-5

Q: A 1.0 liter solution contains 0.745 M hydrogen fluoride (HF) and 0.786  M sodium fluoride (NaF).…

A:

Q: An analytical chemist is titrating 146.4mL of a 0.2300 M solution of isopropylamine CH32CHNH2 with a…

A:

Q: In separate titrations, equal volumes of 0.1 M HCl and 0.1 M HC2H3O2 (weak acid) are titrated with…

A: Acid-base titration is a volumetric titration that is based on neutralization reaction between acid…

Q: ) A 100mL sample is taken to determine the alkalinity in a 1 liter water sample and titrated with…

A: Given :           Z = Molarity of HCl = 0.15 M          V = Volume of water titrated = 100 mL…

Q: The half-equivalence point of a titration occurs half way to the equivalence point, where half of…

A: Given data : Moles of monoprotic weak acid = 0.280 mol Ka = 4.8×10-5

Q: A buffer is made up of 239mL of 0.187 M potassium hydrogen tartrate (K2HC4H4O6) and 137mL of 0.288 M…

A: A buffer solution resists changes in pH. pH <7 has an acidic buffer solution; pH>7 has a basic…

Q: The half‑equivalence point of a titration occurs half way to the equivalence point, where half of…

A: There are two types of bases/acids. One is strong base/acid which is completely dissociable in into…

Q: The half‑equivalence point of a titration occurs half way to the equivalence point, where half of…

A: Since at the half equivalence points, we will have half of the acid reacted and converted to its…

Q: TF 7.In neutralization reaction titration, end point is revealed by the change in color of indicator…

A: All the questions have been answered with proper reasons.

Q: 2.0 g of NaOH is dissolved in distilled water to prepare 100 mL solution. 20.0 mL of this solution…

A: Given in the question, Mass of NaOH taken = 2.0 g Total volume of solution = 100 ml Mass of unknown…

Q: The Kb of a base is 3.9 × 10−5. What is the pH at the half-equivalence point of the titration of…

A: Here kb is small so it is weak base.  Thus  We have titration of weak  base and strong acid.

Q: Question is attached

A: The given reaction is: 3 MgCl2 + 2 K2HPO4 = Mg3(PO4 )2 + 4 KCl + 2 HCl Moles of MgCl2 =0.5 x 0.2=0.1…

Q: A mixture of sodium carbonate (Na2CO3) and sodium bicarbonate (NaHCO3) is dissolved in water and…

A: At first end point Na2CO3 reacts with HCl to form NaHCO3. Na2CO3 + HCl ------> NaHCO3 + NaCl…