What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to which 0.050 mol of HCl were added?   Your submission: 2.742 Feedback: It looks like your answer is close but you may have made one or more rounding errors in your calculation OR you are including too many or too few significant figures in your answer. Check the math and significant figures you used to arrive to your answer and try again.     I've tried 2.742 and 2.74. Both were incorrect and I have 1 more chance left.

Q: How is adding twice the amount of vinegar (the analyte in a titration) going to affect the amount of…

A: 1) when we add twice the amount of vinegar , the amount of NaOH will also become double . From M1V1=…

Q: What is the hydronium ion concentration in a buffer solution prepared by mixing 50.00 mL of 0.10 M…

A: The solution is as follows :

Q: A beaker with 145 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total…

A: Given: Volume of buffer = 145 mL = 0.145 L                                                   (since…

Q: . Calculate the pH of 0.500 L of a buffer solution composed of 3.50 M citric acid and 1.75 M sodium…

A:

Q: enzoic acid (HBenz) has a Kvalue of 6.3 × 10-5. You need to prepare a buffer having a pH a of 4.05…

A:

Q: In an acid-base titration, 25.62 mL of an NaOH solution are needed to neutralize 26.23 mL of a…

A:

Q: How many grams of sodium fluoride should be added to 40.0 mL of 0.223 M hydrofluoric acid solution…

A: A solution containing a weak acid or a weak base along with it's conjugate base or conjugate acid is…

Q: Consider the titration of 50.00 mL of 0.100 M CH3CO2H with 0.200 M KOH, calculate the pH after…

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

Q: You need to prepare an acetate buffer of pH 5.14 from a 0.777 M acetic acid solution and a 2.96 M…

A: pKa of acetic acid = 4.76molarity of acetic acid = 0.777 mol/Lmolarity of KOH = 2.96 mol/L

Q: True or False?   When choosing an acid to make a buffer, you should choose one whose pKa is closest…

A: When an acidic buffer is prepared , that buffer is best in which choosen acid has the pKa value…

Q: Suppose you want to make 500 mL of a 0.20 M Tris buffer at pH 8.0. On the shelf in your lab, you see…

A: According  to the question we have, The pKa of tris is given by = 8.06 The molar concentration of…

Q: Can someone show me the steps for solving this problem? I have no idea what to do when HCl is added.…

A: The Henderson Hasselbalch equation for basic buffer is given as:

Q: 4. Methanoic acid, HCOOH, has a K₂ value of 1.58 x 104 mol/L. What ratio of methanoic acid and…

A:

Q: A butter mixture is required to buffer a solution at pH 6.1. Which of the two weak acids, along with…

A: Concept based on the buffer solutions.

Q: Which of the following acid/base conjugate pairs could you use to make a buffer solution with a pH…

A:

Q: If you have unlimited amounts of water, solid sodium formate (MW 68g/mol), and 100 mL of 0.1 M…

A: A buffer is a solution that can resist pH change upon the addition of acidic or basic components. It…

Q: A 100. mL buffer solution is 0.200 M in HAc and 0.150 M in NaAc.  Calculate the pH of the solution…

A:

Q: You need to prepare an acetate buffer of pH 5.10 from a 0.707 M acetic acid solution and a 2.07 M…

A:

Q: Determine the pH of a buffer that is 0.55 M HNO₂ and 0.75 M KNO₂. The value of Ka for HNO₂ is 6.8 ×…

A: Acid & its salt forms acidic buffer.

Q: Which of the following 1:1 mixtures would be best suited to form a buffer closest to a pH of 3.70?

A: In order to prepare a buffer closest to a pH value of 3.70, the buffering range of the resulting…

Q: More practice - adding acid to a buffer 1 Calculate the pH change that takes place when 100.0 mL of…

A:

Q: For 490.0 mL of a buffer solution that is 0.175 M in HC2H3O2 and 0.135 M in NaC2H3O2, calculate the…

A: The objective of the question is to calculate the Initial pHFinal pH

Q: You are making 100 mL of a 0.66M phosphoric acid buffer with a pH of 7.0. What is the concentration…

A:

Q: Sketch a qualitative titration curve (pH vs. mL of base) for the complete titration of a diprotic…

A: Diplomacy Acid are those Acids which can donate 2H+ at equilbrium.

Q: What is the difference between the endpoint and equivalence point in a titration? Group of answer…

A: The concept used is from basic chemistry of physical chemistry.  Here we deal with equivalence and…

Q: c) A student titrated 50.0 mL of a 0.10 M solution of a certain weak acid with NaOH. The results are…

A: Identify a pH value between 2.5 and 7.5 at which the concentration of the weak acid being titrated…

Q: Formic acid, HFor, has a Ka value of 1.8 x 10^-4. You need to prepare a buffer having a pH of 3.25…

A:

Q: You are working in a lab that studies the psychedelic prodrug, psilocybin. You need to make 1.0…

A: Answer: Buffer solution is a type of solution that resists the change in its pH on adding small…

Q: You need to prepare an acetate buffer of pH 5.41 from a 0.653 M acetic acid solution and a 2.22 M…

A:

Q: Given (Ka CH3COOH=1.8x10-5; Kb NH3=1.8x10-5) Compare Buffer 1 and Buffer 2 Buffer 1 (0.10 M NH3 -…

A:

Q: Question 2 You mix together a buffer solution with 0.076 moles of HA and 0.078 moles of NaA which…

A: Buffer are solution which resist change in PH when acid Or base are added to the solution Here We…

Q: Consider the following buffer system: 0.71 M H3PO4 and 0.64 M H₂PO4-. What is the pH of such a…

A:

Q: RT 4: a) When a strong base is added to a buffer it will react to become neutralized. Determine the…

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

Q: 1. Suppose you have a solution of 25.0 ml pure water. You add add three drops of 1.0 M HCI to the…

A:

Q: 15 The K₂ of oxalic acid (H₂C204) is 5.37 x 10-2. What is the pH of a buffer solution that is…

A:

Q: 100.0 mL of 0.20 M HF (K, = 7.2 x 104is titrated with 5.0 ml of 0.25 M NaOH. Calculate the pH at…

A: Henderson–Hasselbalch equation PH = PKa + log [salt]/ [Acid] NaoH is limiting reagent, it will…

Q: The pH of a 500.00 mL buffer solution containing sodium mandelate and mandelic acid (ka= 3.89x10 4)…

A:

Q: Addition of 15 mL 0.1 M NaOH solution to 25 mL 0.1 M CH3COOH solution produces a buffer solution.…

A:

Q: How many milliliters of 0.100 M HCl should be added to 5.00 g of sodium acetate (82.03 g/mol) to…

A: Given: The molarity of HCl = 0.1 M. The mass of sodium acetate, (m) = 5 g The molar mass of sodium…

Q: Be sure to answer all parts. What is the [H3O+] and the pH of a benzoic acid-benzoate buffer that…

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

Q: ammonium ion - ammonia C. Some Properties of Buffers Buffer system selected. NH4-NH3 HB is 1. pH of…

A:

Q: What is the final pH of the solution when 0.26 mol OH in 0.25 Lis added to 1.75 L of a buffer…

A:

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.