a.)  A student titrated 50.0mL of a 0.10M solution of a certain weak acid with NaOH(aq). The results are given in the graph attached. (i) What is the approximate pKa of the acid? (ii)  What specific value from the graph is needed, in addition to the information in part (a) above, to calculate the molar concentration of the NaOH(aq) ? (iii) Identify a pH value between 2.5 and 7.5 at which the concentration of the weak acid being titrated is less than the concentration of its conjugate base.

Q: 7. You are given a 500 ml solution of 0.1 M HNO3 and an indicator HIn (Ka = 3.2x10) which changes…

A: The weak acids or bases that have different color in their dissociated and undissociated forms are…

Q: 50.00ml of 1.000M sodium benzoate is titrated with 2.000M HCl. (a) What is the pH at the…

A: #(a): Given the volume of 1.000 M  sodium benzoate, C6H5COONa(aq) taken = 50.00 mL  mmoles of sodium…

Q: Determination of the Ionization Constant of a weak acid" Labratory  How would the calculated value…

A: (1) When we record a lower pH value than the real pH value, the concentration of H+ will be higher,…

Q: 18.63 mL of 0.100M H2SO4(aq) is placed in a beaker.  After 16.42 mL of NaOH is added to the beaker,…

A:

Q: Determine the pH during the titration of 26.8 mL of 0.447 M hypochlorous acid (K = 3.5×108) by 0.467…

A: Given that : The volume of hypochlorous acid = 26.8 mL The molarity of hypochlorous acid = 0.447 M…

Q: (a) Calculate the pH of a buffer solution containing 0.40 mole of KF and 0.50 mol of HF in 1.50…

A: pH of buffer solution is calculated using Henderson–Hasselbalch equation, amount of strong acid HCl…

Q: A 5.296 g sample of a solid, weak, monoprotic acid is used to make a 100.0 mL solution. 30.00 mL of…

A:

Q: How much 5.70 M NaOH must be added to 430.0 mL of a buffer that is 0.0180 M acetic acid and 0.0240 M…

A: Concentration of NaOH = 5.70 M Concentration of acetic acid = 0.0180 M Concentration of sodium…

Q: When a 16.8 mL sample of a 0.459 M aqueous hydrofluoric acid solution is titrated with a 0.459 M…

A:

Q: A 1.46 gram sample of an unknown monoprotic acid is dissolved in 30.0 mL of water and titrated with…

A: Titration is a volumetric analysis where the unknown concentration of the compounds is carried out…

Q: 22) Consider the titration of a 50.00 mL sample of 0.200 M benzoic acid with 0.200 M NaOH (aq., 25…

A: Given,  Molarity of benzoic acid (C6H5COOH) = 0.200 M  Volume of C6H5COOH = 50.00 mL  Molarity of…

Q: You are given two glasses of water that have different temperatures. The temperature of the first…

A: two glasses of water having different temperatures. The temperature of 1st glass is 298 K, while the…

Q: A student does a titration of 86.0 mL of a 0.37 M solution of methylamine (CH3NH2(aq) (pKb =3.36)…

A: PH+Poh=14. This is basic buffer equation  Poh=pkb+log[salt]/base Use this equation and get the…

Q: The pH of this solution is equ HCN. The pK, value of HCN will d is added. The cyanide ion…

A: As concentration of HCN is double the concentration of NaCN. Now, if we add strong base in the…

Q: Calculate the change in pH when 7.00 mL of 0.100 M HCI(aq) is added to 100.0 mL of a buffer solution…

A:

Q: For the titration of 75 mL of 0.10 M acetic acid with 0.10 M NAOH, calculate the pH. For acetic…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The reaction of the weak acid HCN with the strong base KOH is HCN(aq) + KOH(aq) HOH(1) + KCN(aq) To…

A:

Q: 8) If 100.0 mL of 0.250 M HBr is titrated with 0.150 M KOH answer the following questions. a) What…

A: Note - Since you have posted a question with multiple sub-parts, we will solve first three…

Q: Consider an analyte solution of 50.0 mL of 0.050 M hydrochloric acid, HCl, titrated against 0.10 M…

A:

Q: 2.60 g of sodium acetate, CH3COONa was dissolved in 150.0 mL of water, H2O. A solution of 0.025 M…

A:

Q: 50ml of 1.00M acetic acid, CH3COOH, is tritated with 2.00 M NaOH . find the PH of the solution at…

A: We would use Henderson-Hasselbalch to calculate the pH ate half equivalence point.  The volume of…

Q: 9. A buffer solution is made of 6.1 g of benzoic acid (C6H5COOH) and 0.60 g of sodium benzoate…

A: First calculate the conc of each . Then applying Henderson equation we can calculate the pH.  The…

Q: 18mL of the diluted solution (S1) are transferred into a 250 ml beaker, then titrated with a…

A: 1. To add the volume of Solution S1: Pipette 2. To add solution of HCl: Burette

Q: 2.500 g of an unknown achiral primary amine is dissolved in enough water to yield a 50.00 mL…

A: Given : mass of primary amine used = 2.500 g concentration of HCl used = 0.9250 M And volume of HCl…

Q: The pK, values for the dibasic base B are pKbl = 2.10 and pKb2 = 7.38. Calculate the pH at each of…

A: pkb1 = 2.10 pkb2 = 7.38 [B] = 0.95 M [HCl] = 0.95 M V = 50.0 mL

Q: 1). The sample of 25.00 mL of 0.010 M HCOOH is titrated with 0.020 M KOH. (a) Show the reaction…

A: Since you have asked question with multiple subpart, we will solve the first  three subpart question…

Q: Cl2(aq) reacts with H,O(€) as follows: Cl2 (aq) + 2 H20(€) 2H;0* (aq) + Cl¯(aq) + HOCI(aq) For an…

A: In order to find the answer to the above question we try to analyze the given data: The reactants of…

Q: When titrating 15 mL of 0.000489 mol/L hydrazoic acid (HN3) with 0.000517 mol/L KOH: (a) What is the…

A:

Q: The mixture of 100.0 mL of 0.100 M NaOH (aq) and 100.0 mL of 0.300 M CH3COOH (aq) will result in a…

A:

Q: 7) An aqueous solution containing 25.0 mg of a hormone in 150.0 mL of solution with an osmotic…

A: Note : As per our guidelines we are supposed to answer only first question ,kindly resubmit the…

Q: What volume of 1.00 M NaOH(aq) in litres (L) should be added to 2.00 L of 1.25 M C6H5COOH(aq) to…

A: NaOH and C6H5COOH react and then form salt .... remaining C6H5COOH and salt form buffer solution

Q: cetic acid and a salt containing its conjugate base, such as sodium acetate, form buffer solutions…

A: Given that : Acetic acid and a salt containing its conjugate base, such as sodium acetate, form…

Q: Calculate the pH of a solution prepared by dissolving 0.482 mol of benzoic acid and 0.104 mol of…

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The…

Q: What is the pH at the equivalence point in the titration of 0.50 M KOH with 1.00 L of 0.750 M HF(aq)…

A: 1- First calculate the volume of KOH :  We will used the equation, ( M2V2)KOH = ( M1V1)HF  ( 0.50M ×…

Q: 1. the temperature for each solution is carried out at approximately 297 K where Kw = 1.00 x 10 ^-14…

A:

Q: 6. ( ) A 40 mL sample of a 0.2 M RNHz (kb = 3.7 x 10") is titrated with 0.2 M HC the pH after the…

A:

Q: 24.54 mL of 0.100M H2SO4(aq) is placed in a beaker.  After 22.04 mL of NaOH is added to the beaker,…

A: The balanced equation for the reaction between sodium hydroxide and sulfuric acid is as follows.…

Q: (a) Calculate the pH of the 0.30 M NH3 / 0.35 M NH4Cl buffer.   What is the pH of the buffer after…

A: A buffer solution is made up of weak acid or base with its conjugate base or acid respectively. pH…

Q: When a 29.6 mL sample of a 0.484 M aqueous hydrofluoric acid solution is titrated with a 0.499 M…

A: Given that Molarity of HF = 0.484 M   Volume of HF = 29.6 mL   Ka of HF= 3.5 x 10-4     pKa = –…

Q: Consider the titration of 36.0 mL of 0.123 M ammonia with 0.0766 M HCl. (See the Acid-Base Table…

A: Answer:- This question is answered by using the simple concept of calculation of pH at different…

Q: A buffer solution was prepared that contained 0.60 M hydrogen fluoride, HF (Ka = 7.2 x 104) and…

A: An aqueous solution efficient to withstand the pH changes and comprising weak acid/base combined…

Q: 1. A 20.0 mL sample of a 0.240 M hydrofluoric acid (HF) solution is titrated with 0.200 M NaOH.…

A: