what is the balanced equation for NH4+ / NH3 buffer and what is the literature Ka value of it?

Q: 25.00 mL of weak acid HA is titrated with 0.398M NAOH. The equivalence pH is 8.92 when 31.03 mL of…

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Q: 1) How to prepare a buffer solution with pH = 5.00? Chemicals HAc Amount m(NaAc) / g V(HAC)/mL NaAc

A: Please find the attachment.

Q: Which pair of solutions forms a -5 buffer solution when equal volumes * ?of each are mixed 0.2M HCl…

A: Answer: option 2 : 0.4M CH3COOH and 0.2M NaOH will make a buffer solution when equal volume are…

Q: How much of each component of CH3COOK and CH3COOH (Ka=1.77 x 10-5) is needed to prepare 2.5 L of the…

A: Please find your solution below : Buffer solution is defined as a solution which resist the change…

Q: (1) The pH curve represents the titration of a( acid with a base. (2) Choose a suitable indicator…

A: If the pH = 7 for a titration it is the reaction of an strong acid and a strong base. From the given…

Q: concentrations of F- and HF

A: Given pH of buffer is 3.16 And ka

Q: A solution made from 100 mL of 0.1 M NaOH and 100 mL of 0.2 M HC2H3O2 will act as a buffer solution.…

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Q: What is this titration curve for? 12 10 20 40 volumo or bese (m a mixture of a difunctional base and…

A: The given titration curve  is for:

Q: Match the following descriptions of titration curre with the diagrams: (a) strong acid added to…

A: a.

Q: What is the M of NaOH if it takes 40 ml of NaOH to reach the equivalence point in a titration with…

A: We have to find the molarity of NaOH solution

Q: How did you determine the values of pka1 and pka2 from the titration curve?

A: For the titration of a polyprotic acid with a base, we get more than one equivalence points. We can…

Q: During a titration, 40.0 ml of 0.25M NaOH were required to neutralize 50.0ml of HCl. What's the…

A: Concentration of solution is equal to the ratio of number of moles to volume of solution.…

Q: What is the general rule in preparing a buffer with a high buffering capacity?

A: In the preparation of buffer (acidic buffer), a weak acid, such as acetic acid, and its salts, such…

Q: what is the ph of a buffer solution composed of 0.50m formic acid and 0.70m sodium formate

A: Answer: 3.90  Given buffer solution contains formic acid,  HCOOH , a weak acid, and sodium formate,…

Q: this one, need the acid/ base tables in the book (Appendix E & F). tch each buffer system with the…

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Q: To prepare a buffer using sodium phosphate, which of the following wold also be needed? a) ammonium…

A: Buffer solution is prepared by mixing Weak acid to the salt of same weak acid+strong base. Here,…

Q: A 150.00 mL volume of HCI solution required 29.71 mL of 0.01963 M NAOH to reach an end point with…

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Q: In a titration of 71.0 mL of a 0.750 M solution of a triprotic acid H,C H,O, (citric acid) with…

A: The solution is given below -

Q: A 25.0 mL sample of 0.105 M HCl was titrated with 32.5 mL of NaOH. What is the concentration of…

A: One mole of HCl requires 1 mole of NaOH. The moles of HCl are first calculated.

Q: 15. At which point of the titration curve is there maximum buffering capacity for a weak acid? A. at…

A: We will see the maximum buffering capacity for a weak acid.  You can see details solution below.

Q: You wish to make 10.0L of phosphate buffer(0.1M) with a pH of 7.4 from NaH2PO4 (molecular weight,…

A: The buffer action due to NaH2PO4 and Na2HPO4 is due to inter conversion of the acid H2PO4-to the…

Q: What

A: At equivalence point, solution of ammonia was completely neutralizated with HCl so at equivalence…

Q: Determine if each mixture is a buffer. HClHCl and HF HC2H3O2 and KC2H3O2 HF and NaF NaOH and NH3

A: Answer :-  Buffer  Not a buffer  HC2H3O2 and KC2H3O2  HF and NaF  HCl and HF  NaOH and…

Q: Explain why a buffer can be prepared from a mixture of NH4Cl and NaOH but not from NH3 and NaOH.

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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 volume needed to titrate a 50ml of 0.125N NH3. Titrant used is 0.250N HCl.

A: Titration is a laboratory quantitative technique in chemistry that is used to determine the…

Q: This curve represents titration of a. base with Kal < Ka2 b. base with Kbl < Kb2 C. acid with Kal <…

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Q: b. 20.00 mL of buffer solution with 1.00 mL of 1.0 M NaOH. c. 20.00 mL of buffer solution with 1.00…

A: A buffer solution resists changes in pH. pH &lt;7 has an acidic buffer solution; pH&gt;7 has a basic…

Q: How many moles of Li2CO3 were titrated if 18.24ml of 0.243 M HCL were required?

A: given volume of HCl solution given = 18.24 ml = 0.01824 L   molarity of HCl given = 0.243 M  formula…

Q: sodium acetate, how many mL of 0.100 M NaOH can be added before the buffer capacity is reached?

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Q: What ratio of NaCN to HCN is needed to prepare a pH 9.80 buffer? (Ka of HCN is 4.9 × 10⁻¹⁰)

A: Given data is as follows: The pH of the buffer solution = 9.80 The Ka of HCN = 4.9×10-10 The ratio…

Q: (1) The pH curve represents the titration of a | acid with a base. (2) Choose a suitable indicator…

A: The pH curve represents the titration of a strong acid with a strong base. Explanation-Since we see…

Q: In a titration of 75.0 mL of a 0.500 M solution of a diprotic acid H,C H,O, (malonic acid) with…

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Q: you are given 20 XSSC how much of 20 XSSC is required to make 25 mL of 0.5 XSSC buffer solutioN

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Q: 5. What is the "equivalence point" of a titration?

A: Titration is a laboratory method used to determine the unknown concentration of acid or base. The…

Q: For each titration, predict whether the equivalence point is less than, equal to, or greater than pH…

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Q: Consider an ammonium buffer (NH4+).  Which species would react if an external acid, H3O+ were added?…

A: Applying concept of buffer action.

Q: What is the of a buffer that has [CH3CO2H] = 0.700 M and [CH3CO2]- = 0.600 M?

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Q: The titration curve with the steepest vertical line would be between KOH and HBr   HCOOH   H2O…

A: the steepest vertical line would be between KOH (strong base ) and HBr ( strong acid )  A Titration…

Q: The following plot shows a titration curve for the titration of 1.00L of 1.00M diprotic acid H2A

A: Since H2A is a diprotic acid and it can gave two H+ ions in the solution therefore it has two…

Q: What ratio of NaCN to HCN is needed to prepare a pH 9.40 buffer? (Ka of HCN is 4.9 × 10⁻¹⁰)

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Q: Which of the following is NOT a buffer? Explain your choice. ● CH3NH2– CH3NH3Cl ● NaClO4– HClO4 ●…

A: ( NaClO4– HClO4 ) - not a buffer solution. So, option B is correct.

Q: Calculate how many gramscof ammonium chloride must be added to one litre of 0.1M NH3 to give a…

A: Ammonium chloride and ammonia will together form a basic buffer solution. The pOH of a basic buffer…

Q: Equal volumes of solutions of acids and their sodium salts are mixed to prepare a buffer. The…

A: A buffer solution (more precisely, pH buffer or hydrogen ion buffer) is an aqueous solution…

Q: The next 9 questions are related to the titration of 20.00 mL of a 0.0750 M acetic acid solution…

A: Half-equivalence point is the mid point of a titration. At this point, the millimoles of the added…

Q: What ratio of base to acid is needed to make a buffer with formic acid, HCOOH, and potassium…

A: HCOOK is conjugate base and HCOOH is acid and the ratio of two can be calculated from the…

Q: The Henderson's equation for the pH of a buffer solution is: O pH = pka + log [acid] x [salt] O pH =…

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Q: What is the pHpH of a buffer solution containing 8.0×10−2 M HNO2 and 5.0×10−2 M NO2−?

A: Given : Molarity of HNO2 = 8.0×10−2 M Molarity of NO2 - = 5.0×10−2 M

Q: What ratio of NaCN to HCN is needed to prepare a pH 10.00 buffer? (Ka of HCN is 4.9 × 10⁻¹⁰)

A: Buffer solution: The buffer solution is an aqueous solution consisting of a mixture of a weak acid…

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.