An unknown contains citric acid, C6H8O7, a tribasic acid, and potassium chloride. If 2.135 g of unknown requires 19.90 mL of 0.688 M NaOH for complete neutralization of all reactive protons, calculate the percent by mass of citric acid in the sample. Indicate clearly your calculations and reasoning.

Q: Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of…

A: We calculate normality of acid and base then use this formula N1V1 = N2V2

Q: What volume of 5.87 x 10-1 molar phosphoric acid, H3PO4 , is required to reach equivalence with…

A: Given : Concentration of H3PO4 = 5.87 X 10-1 M = 0.587 M Concentration of NaOH = 4.00 X 10-1 M =…

Q: > Calculate the percent of acetic acid in a 20 mL vinegar sample. Titration was used, and it took…

A: Given data is Volume of the vinegar sample = 20 mL  Volume of NaOH used in the titration= 35.19 mL…

Q: A chemistry student weighs out 0.146 g of citric acid (H,C,H,O,), a triprotic acid, into a 250. mL…

A:

Q: If 350.0 mL of 0.450 M Ca(OH)2 are added to 380.0 mL of 0.550 M HCl. Ca(OH)2 + 2HCl → CaCl2 + 2H2O…

A: Given that: Volume of Ca(OH)2 = 350.0 mL Concentration of Ca(OH)2 = 0.450 M  Volume of HCl = 380.0…

Q: Determine the volume of 0.205 M KOH solution required to neutralize each sample of sulfuric acid.…

A: Given neutralisation reaction is H2SO4(aq) + 2KOH(aq) → K2SO4(aq)+2H2O(l) Volume of 0.205 M sulfuric…

Q: 10.A 0.1268 g sample of a monoprotic weak acid was dissolved in 25 mL of water and titrated with…

A: Given: Molarity = 0.0625 M Volume of base = 17.9 mL mass of sample = 0.1268 g The reaction can be…

Q: What volume (in L) of 1.5 M Na₂CO₃ would be required to obtain 0.90 moles of Na⁺ ions?

A: Dissociation of Na2CO3                                       Na2CO3  → 2Na++ CO3-2 From the above…

Q: A 25.00 mL sample of NaOH solution required 50.00 mL of 0.0375 M H2SO4 solution for complete…

A:

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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: 2. Dilute sulphuric acid is a strong acid. (a) What is meant by a "strong" acid? (b) A student…

A: Given: Volume of dilute sulfuric acid = 25.0 cm3 = 25.0 mL   Trial-1 Trial-2 Trial-3 Trial-4…

Q: concentrated sulfuric acid. The sulfuric acid reacts with the copper(II) carbonate to produce a blue…

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Q: Consider an acid-base neutralization reaction: H2SO4(aq) + 2 NAOH(aq) NazSO4(aq) + 2 H2O(1) --->…

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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: To a 25.00 mL volumetric flask, a lab technician adds a 0.375 g sample of a weak monoprotic acid,…

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Q: An aqueous solution of Ca(OH)2with a concentration of 0.200 M was used to titrate 25.00 mL of…

A: Given ->  Molarity of Ca(OH)2 = 0.200 M = M1 Volume of Ca(OH)2 = 17.73 ml = 0.01773 L = V1 (1L =…

Q: A. An unknown contains citric acid, C6H8O7, a tribasic acid, and potassium chloride. If 2.135 g of…

A: Introduction: Molarity: Molarity is often used to express the concentration of solution. It is…

Q: Malonic acid, H2C3H2O4 (aq), is a diprotic acid, so 2 moles of hydroxide ions are required per mole…

A: A neutralization reaction can be described as a chemical reaction in which acid and base react…

Q: Titration is a common laboratory method used to verify the concentration of a chemical. On Mars,…

A: The balanced equation for the reaction of NaOH and H2SO4 as follows; 2 NaOH   +    H2SO4   →  Na2SO4…

Q: An unknown acid has the following percent composition: 54.529% C, %H, 9.1522% H, and 36.319% O. A…

A:

Q: Titration of a 20.00 mL sample of acid rain required 4.13 mL of 0.08424 M KOH to reach the end…

A: The given reaction is, H2SO4- + 2KOH -----> K2SO4 + 2H2O This means that 2 moles of KOH is…

Q: unknown acid, which can be either oxalic acid, H2C2O4, or citric acid, H3C6H5O7. To determine which…

A: I m not getting why you have written moles of NaOH and oxalic acid after that .We have to find it…

Q: Iron reacts with HCl solution to give H2 gas and Fe2+ ions. Suppose that 3.7 g of iron are to be…

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Q: A 3.860 g sample of a mixture of sodium carbonate and sodium chloride is dissolved in 25.30 mL of…

A: Number of Mole- Ratio of given mass of substance to the molar mass of substance is called number of…

Q: What volume of 0.73 M HCl is required to neutralize 95.0 mL of 0.45 M Ca(OH)2 ?

A: Molarity formula can be given as Molarity=Number of moles of soluteVolume of solvent in (L) And the…

Q: A 25.00 mL sample of acetic acid (CH3COOH) is titrated to the equivalence using 31.08 mL of 0.1978 M…

A:

Q: A chemistry student weighs out 0.0917 g of citric acid (H₂CH₂O₂), a triprotic acid, into a 250. mL…

A: Given : mass of H3C6H5O7 = 0.0917 g And concentration of >NaOH = 0.1200 M Since H3C6H5O7 is a…

Q: A 0.5504-g sample of KHP (potassium hydrogen phthalate, KHC8H4O4; molar mass = 204.22 g/mol) is…

A:

Q: 3NaOH= H3PO4----> Na3PO4+ 3H20 A 41.0ml sample of NaOH solution of unknown concentration requires…

A: Given, 24.3 mL of 0.150M  H3PO4 no. Of moles of H3PO4= 0.0243 L × 0.150M No. of moles of H3PO4 =…

Q: What mass of  NaHCO3  would he need to ingest to neutralize this much  HCl

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