The desired pH is 6.4 in creating a buffer system/buffer solution of about 50-60mL. Therefore, a student picks Silicic Acid Si(OH)4, as 1mL of 1M of the acid has a pH of 6.4, which also has a pKa of 9.82. What is the ratio HA/A- and ratio A-/HA-?

Q: Calculate the pH of a solution containing 25 mL of 1.73 M of a weak acid AH, for instace CH3COOH,…

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Q: acid/conjugate base systems shown below. Conjugate Weak Acid pKa Base C,0,- HPO, HC,04 6.4x105 4.19…

A: The question is based on the concept of buffer preparation. we know the concentration and pH of the…

Q: buffer of pH = 7.5 is desired. Which two of the following compounds should be dissolved in water in…

A: Buffer is the solution of mixture of weak acid/weak base with its salt of strong base/strong acid

Q: 2- one liter of buffer solution contains 0.1 mole of benzoic acid and 0.2 mole of sodium benzoate…

A: Here we are required to find the Change in pH of the buffer solution

Q: Phosphoric acid is a triprotic acid (Kal 6.9 x 10-3, K2 = 6.2 × 10-8, and Ka3 = 4.8 x 10-13). To…

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Q: Concentration Buffer solution pka Desired ph 0.50 M Acetate 4.70 5.0 250mL was used to prepare…

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Q: 8. What is the pH in the preceding problem if the mixture consists of 0.1 M acetic acid and 0.25 M…

A: The acidity of a solution is expressed in pH scale and is furnished in terms of hydrogen ion…

Q: A solution is prepared by dissolving 0.23 mol of nitrous acid and 0.27 mol of sodium nitrite in…

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Q: You are studying an unusual enzyme that produces hydronium ions (H3O+) during the course of the…

A: This question is from ionic equilibrium. We will figure out it answer with proper explanation.

Q: Which of the following titration systems will have the largest ApH at the equivalence point region?…

A: In acid-base titration is an example of neutralization reaction, so the pH at equivalence point is…

Q: What is the pH of a buffer that results when 5.46 mole of H3PO4 is mixed with 2.97 mole of NaOH and…

A: · Moles of H3PO4 = 5.46 mol· Moles NaOH = 2.97 mol· Volume of solution = 1.00 L· Ka1 = 7.5 × 10–3

Q: pka = 1.95 (HClO2) If you have 500 mL of a 0.10 M solution of the acid, what mass of the…

A: pH of buffer solution is calculated by using Henderson Hassel balch equation

Q: buffer solution is 0.100 M in formic acid (HCOOH) and 0.0500 M in sodium format (HCOONa). The ka of…

A: The question is based on the concept of buffer solution. A buffer is a solution which resist any…

Q: Which

A: Those solution when resist to change the pH when small amount of acid or base added on it's then…

Q: Suppose you have a buffer, comprised of 0.350 mol of weak base and 0.250 mol of weak acid. Ifthe pH…

A: The of a buffer solution can be calculated using Henderson Hasselbalch Equation written as follows:…

Q: An analytical chemist is titrating 134.4mL of a 0.6500M solution of nitrous acid HNO2 with a 0.7300M…

A: The molarity of an unknown solution can be determined by titrating it with a known solution by using…

Q: A buffer solution is prepared with 0.48 M of the weak base B and 0.23 M of the chloride salt HBCl.…

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Q: A buffer solution is prepared with 0.48 M of the weak base B and 0.23 M of the chloride salt HBCl.…

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Q: A biochemist prepares two stocks of sodium phosphate buffer by titrating phosphoric acid with sodium…

A: Given: pKa of phosphoric acid are 2.15, 7.20 and 12.35 Volume of 7.20 buffer is 50.0 mL Volume of…

Q: Calculate the buffer capacity of a buffer solution prepared by mixing 0.215M sodium acetate and…

A: Van Slyke developed an equation for determining buffer capacity.  Buffer capacity is defined by the…

Q: We dissolve 3.54 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. We…

A: Any acid's strength always gets estimated by its dissociation constant which is symbolized as "Ka".…

Q: Calculate the pH of a 0.63 M solution of a weak acid, AH, for instance CH3COOH, and 1.46 M of a…

A: The buffer solution pH will be decreased when the strong acid is appended whereas the pH value will…

Q: buffer system has 3[HA]=[A-]. Given that the pKa is 7.2, what is the pH of the buffer solution at…

A: Given,  3[HA]=[A-]  [A-]/[HA] = 3  pKa = 7.2  It is Acidic buffer,   pH = pKa + log([A-]/[HA])

Q: a) A nitrous acid/sodium nitrite buffer solution is prepared.  20.0 mL of 6.50 M nitrous acid (HNO2)…

A: Q5:  #(a):  Volume of 6.50 M HNO2 added = 20.0 mL * (1L/1000 mL) = 0.0200 L  => Moles of HNO2…

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

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Q: What is the pH of a buffer solution that is 0.50 M in formic acid (HCHO2) and 1.0 M in sodium…

A: The given problem can be solved by using Henderson-Hasselbalch equation given below as; pH=pKa + log…

Q: a. Calculation of the pH of a Solution of a Polyprotic Acid Histidine has ionizable groups with pKa…

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Q: Consider a buffer solution that contains 0.45 M H3PO4 and 0.55 M NaH2PO4. For H3PO4, Ka1 = 6.9E-3,…

A: The given buffer solution has 0.45 M H3PO4 as the weak acid and  0.55 M NaH2PO4 as the conjugate…

Q: An analytical chemist is titrating 219.6 mL of a 0.9100M solution of nitrous acid (HNO,) with a…

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Q: Calculate the pH of a buffer prepared by dissolving 21.5 g of benzoic acid (FW = 122.0 g/mol, Ka =…

A: Given: Weight of benzoic acid = 21.5 g Molar mass of benzoic acid = 122 g/mol Ka of benzoic acid =…

Q: Consider the list of acids and their pKa values to the right. What two compounds would be best to…

A: Buffers are effective when the pKa values are closest to pH.

Q: Phosphorous acid, H,PO,(aq), is a diprotic oxyacid that is an important compound in industry and…

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

Q: A plot of pH vs volume of 0.05 M NaOH solution was obtained for titrating 0.4055 g of a dried solid…

A: The plot of pH vs volume of 0.05 M NaOH solution given is as,

Q: Consider the list of acids and their pKa values attached What two compounds would be best to use in…

A: A buffer solution performs best when the concentration of acid/ base is equal to the concentration…

Q: An analytical chemist is titrating 159.5 mL of a 1.200 M solution of nitrous acid (HNO,) with a…

A: The is a neutralization reaction which takes place as,…

Q: Calculate the pH of a solution containing 17 mL of 1.49 M of a weak acid AH, for instace CH3COOH,…

A: First calculate the moles of acetic acid and KOH.

Q: A sodium hydrogen carbonate/sodium carbonate buffer system is to be prepared with a pH of 9.89.  The…

A: The question is based on the concept of buffer solution.   A buffer is a solution which resist any…

Q: formic acid/sodium formate buffer solution can be prepared with 0.012 M each of formic acid (HCOOH)…

A: Molar mass of HCl = 35.5 + 1  = 36.5g/mol

Q: A 0.0250 M Ca(X)2 has a pH of 8.049. Ca(X)2 is composed of a Ca2+ cation and an unknown anion X-,…

A: Given,  Molarity of Ca(X)2 = 0.0250 M. and it has pH = 8.049. The Kb or Kh of X- is:

Q: A 50.00 mL sample of ascorbic acid (H2C6H606) is titrated with 0.1200 M KOH. The second…

A: Here is your answer...... This curve is just for illustration of how titration takes place of the…

Q: Acetic acid’s pKa is 4.75 and nitrous acid’s pKa is 3.16. If you made one buffer of equal parts…

A: Given: pKa of acetic acid = 4.75  pKa of nitrous acid = 3.16  And both the buffers have an equal…

Q: You have prepared an acetic acid buffer solution (pKa = 4.76) containing 0.1 mole each of acetic…

A: A buffer solution is prepared by mixing 0.1 mole each of the acetic acid and sodium acetate. Now…

Q: I have 3 moles of a monoprotonated base (there are four pKa values(pKa1=2.3, pKa2=4.6,pKa3=10.1,…

A: The chemical reaction for the monoprotonated base can be given as follows: HCl+B-→HB+Cl-;…

Q: A 100 ml of 0.100 M phosphate buffer solution with a pH of 8.10 is to be prepared by adding 1.00 M…

A: The required pH of the buffer is 8.10, which is closest to the pKa2 value. H2PO4(aq) ⇌ HPO4-(aq) +…

Q: You prepare a buffer solution by dissolving 2.00 g each of benzoic acid (HC7H5O2, MW = 122.12) and…

A: To answer this question first of all we have to find the concentration of the acid and its…

Q: Calculate the pH of a 0.26 M solution of a weak acid, AH, for instance CH3COOH, and 1.01 M of a…

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Q: Consider the titration of 25.0 mL of 0.112 M acetic acid (CH, COOH, pKa = 4.75) with 0.131 M NaOH.…

A: Given that,  Volume of 0.112 M CH3COOH acid = 25 mL = 0.025 L Moles of  CH3COOH acid given = 0.112…

Q: Phosphoric acid is a triprotic acid (Kal = 6.9 x 10-3, K2 = 6.2 x 10-8, and Ka3 = 4.8 x 10-13). To…

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Q: 6-Calculate the pH of a H2PO4-/ HPO42- buffer in which the concentration of the weak acid component…

A: The pH of the buffer is determine using the Henderson-Hasselbalch equation- pH = pKa + log…

Q: pH indicator. A dye that is an acid and that appears as different colors in its protonated and…

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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.