Question in image If an uknown concentration 25.00 mL HCl consumes 20 mL of 0.123 M NaOH to reach endpoint,calculate the concentration of the HCl solution (Show calculation).

Given :- Volume of HCl solution = 25.00 mL Volume of NaOH solution = 20 mL Molar concentration of…

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Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter20: Applications Of Oxidation/reduction Titrations

Section: Chapter Questions

Problem 20.2QAP

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A solution is made by dissolving 15.0 g sodium hydroxide in approximately 450 mL water. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to bring the volume to 500.0 mL of solution. (a) Calculate the pH and pOH in the final solution. (b) Why would we wait for it to return to room temperature? (c) If the mass of the water used to initially dissolve the sodium hydroxide were exactly 450 g and the temperature of the water increased by 8.865 C, how much heat was given off by the dissolution of 15.0 g of solute? Assume the specific heat of the solution is 4.184 J/g. K. What is the molar heat change for the dissolution of sodium hydroxide (known as the enthalpy of solution, Hsol)?
Consider the following six beakers. All have 100 mL of aqueous 0.1 M solutions of the following compounds: beaker A has HI beaker B has HNO2 beaker C has NaOH beaker D has Ba(OH)2 beaker E has NH4Cl beaker F has C2H5NH2 Answer the questions below, using LT (for is less than), GT (for is greater than), EQ (for is equal to), or MI (for more Information required). (a) The pH in beaker A the pH in beaker B. (b) The pH in beaker C the pH in beaker D. (c) The % ionization in beaker A the % ionization in beaker C. (d) The pH in beaker B the pH in beaker E. (e) The pH in beaker E the pH in beaker F. (f) The pH in beaker C the pH in beaker F.
For oxyacids, how does acid strength depend on a. the strength of the bond to the acidic hydrogen atom? b. the electronegativity of the element bonded to the oxygen atom that bears the acidic hydrogen? c. the number of oxygen atoms? How does the strength of a conjugate base depend on these factors? What type of solution forms when a nonmetal oxide dissolves in water? Give an example of such an oxide. What type of solution forms when a metal oxide dissolves in water? Give an example of such an oxide.
Natural goldenrod pigment is a yellow dye that changes to a bright red color in the presence of a basic solution and remains yellow in contact with an acidic or neutral solution. Peter is using goldenrod paper to test three solutions he prepared Because Peter wants his message to be clearly visible in a red background at the end of his investigation, in what sequence should he use the solutions to paint the paper? A Paint first with lemon juice and then with tap water. B Paint first with laundry detergent and then with tap water. C Paint first with laundry detergent and then with lemon juice. D Paint first with lemon juice and then with laundry detergent.
Give detailed Solution with explanation needed ...complete the following reactions
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d Tap - Cengage Learning vo/index.html?deploymentld%3D55750828934189288909969212&elSBN 781305657571&snapshotld%=2199898&id%3.. * Tp * NDTAP Q Search this course Use the References to access important values if needed for this question. To determine the concentration of a solution of hydrochloric acid, a 125.0-mL sample is placed in a flask and titrated with a 0.1169 M solution of barium hydroxide. A volume of 40.55 mL is required to reach the phenolphthalein endpoint. Calculate the concentration of hydrochloric acid in the original sample. M Submit Answer 5 question attempts remaining
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d Tap - Cengage Learning vo/index.html?deploymentld%3D55750828934189288909969212&elSBN=9781305657571&snapshotld%3D2199898&id%=... * K NDTAP Q Search this cours Use the References to access important values if needed for this question. It is desired to neutralize a solution X that contains a mixture of potassium chloride and hydrobromic acid. Titration of 11.7 mL X with 0.134 M silver nitrate required 53.5 mL of the latter. The resulting precipitate, containing a-mixture of AgCl and AgBr, was dried and found to weigh 1.290 g. How much 0.114 M sodium hydroxide should be used to neutralize 11.7 mL solution X? mL Submit Answer 5 question attempts remaining
Maleic acid (H2C4H2O4, represented by H2M) is the precursor of malic acid widely used in industry. food as an acidulant and in the pharmaceutical industry it is used in the treatment of wounds. This acid can be determined by neutralization titration. Answer the items below about this determination. a) Considering a 15.0 mL sample of maleic acid-based product used in industry, determine the maleic acid concentration, in mol/L, in the sample knowing that 21.7 mL of a solution of 0.1120 mol/L NaOH for complete neutralization of this acid. How many grams of maleic acid were in the sample analyzed and what is its percentage (%, m/v) in the sample? [Answer; m=0.1405 mol/L; percentage = 0.9365%] NaOH(aq) + H2M(aq) ----> Na2M (aq) + H2O(l) b) And Suggest an appropriate indicator for the titration of this acid by looking at the titration curve profile below (image)
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If an uknown concentration 25.00 mL HCl consumes 20 mL of 0.123 M NAOH to reach endpoint, calculate the concentration of the HCl solution (Show calculation).