A chemist needs a solution buffered at pH 4.30 and can choose from the following acids: A. Chloroacetic acid (Ka = 1.35 x 10-3) B. Propanoic acid (Ka = 1.30 x 10-5) C. Benzoic acid (Ka = 6.40 x 10-5) D. Hypochlorous acid (Ka = 3.50 x 10-8) Which of the following will be best suited to make the buffer? Show calculations to support your answer.

Q: You plan to make a buffer solution with sulfurous acid (H₂SO3) and it undergoes dissociation…

A: To make a buffer solution at pH 7.040, we can use the Henderson-Hasselbalch equation: pH = pKa +…

Q: The Ksp for In(OH)3 is 1.3 x 10-37.…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: If we have a solution of weak acid HA (Ka = 1,00 * 10-6) and at pH 4,00. How much water needs to be…

A: Hey, as the volume of weak acid is not given in the question, I consider it as 25 mL in order to…

Q: If the pKa of the indicator is approximately 6, to which of the following equivalence point will it…

A: A suitable indicator should have pH of color transition is given by the equation of pH.…

Q: A weak acid has Ka of 4.47 x 10-4.  What is pKa for this weak acid?

A:

Q: How much sodium acetate is left when 0.015 moles NaOH is added to a buffered solution containing…

A: Given,  Number of moles of NaOH added = 0.015 moles  Moles of acetic acid = 0.075 moles  Moles of…

Q: How many moles of NaA would need to be added to 544 mL of 1.07 M HA to produce a solution with a pH…

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

Q: What is the pH of a solution that contains 0.15 M benzoic acid and 0.45 M potassium benzoate? The Ka…

A: Assuming benzoic acid dissolves in water and produces y concentration of ions Since the reaction is…

Q: A certain indicator, HA, has a K, value of 5.0 x 10-7. The protonated form of the indicator is red…

A:

Q: A solution contains compound X, which is a weak base, and its conjugate acid, in a molar ratio of…

A: Given, A solution contain compound X (weak base). Molar ratio of weak base: conjugate acid = 1 : 5…

Q: How many grams of ammonia should be added to 500mL of IM ammonium chloride to give a pH 9? Ka…

A: The number of moles can be calculated by multiplying the concentration in terms of molarity by…

Q: What is the pH of a buffer solution that is 0.30 M chloroacetic acid and 0.17 M sodium…

A: Since chloroacetic acid is a monoprotic acid.

Q: Calculate the percent ionization of HA in a 0.010 M solution. Express your answer to two significant…

A: The chemical reaction is as follows and the ICE table    HA + H20 <--> H3O+ + A- Initial…

Q: 6. Calculate the percent dissociation of 0.10 M hydrazoic acid (HN3, Ka= 1.9 x 10-5). Recalculate…

A: Answer: Hydrazoic acid is a weak acid and we have to study the common ion effect on its dissociation…

Q: 1. a. What is the pH of a solution prepared by adding 25.0 mL of 0.10 M acetic acid (Ka = 1.8 x…

A:

Q: what is the pH of the ethanoic acid solution (CH3COOH) 0.15 M with Ka = 1.8 × 10-⁵? a) What will be…

A: Given  For CH3COOH , Ka = 1.8 x 10-5  pKa = -log Ka = -log ( 1.8 x 10-5 ) = 5 - 0.255 = 4.745  Moles…

Q: You have an aliquot of 10 mL of 0.1022 mol/L phosphoric acid.  The ka values for phosphoric acid are…

A: The objective of this question is to calculate the resultant pH of a solution after mixing…

Q: Calculate the pH of a buffer solution prepared by dissolving 0.6 mole of cyanic acid HCNO, and 0.5…

A: Answer :-  The pH of buffer solution prepared by dissolving 0.6 mol HCNO and 0.5 mol NaCNO in enough…

Q: Phosphoric acid is a triprotic acid with the Ka values of 7.25 10-3, 6.31 10-8 and 3.98 10-13…

A: Millimoles of H3PO4 taken   =Molar concentration of acid×Volume of acid=0.1000 M×25 mL=2.5 mmol

Q: Methyl red is a pH indicator. It turns red if the pH drops to 4.4 or lower, and turns yellow in…

A: Methyl Red is one of the important pH indicator . Its shows two type of color in accordance with…

Q: Specifically, the question is "If acetic acid is the only acid that vinegar contains (Ka = 1.8 x…

A: The dominant equilibrium reaction is given below. The concentration of hydronium ion can be…

Q: pH = 7.15 Use the following table to predict the best acid/ base pair for the desired pH/pOH values…

A: Given :  pH = 7.15 For acidic buffer : pH = pKa + log ([conjugate base]/[acid]) For basic buffer :…

Q: Which value of delta G would result in K eq =1 Give a delta G that would result in K eq<1

A: The relationship between the ΔG and equilibrium constant is given by  =&gt; RTln(Keq ) = -ΔG where R…

Q: The following are equations that you might need to solve problem a-d: Kw = KaKь 14 = pka + pkb Kw =…

A: Given,  Molarity of HCl = 0.100 M Volume of HCl = 25.0 mL Molarity of NaOH = 0.250 M The pH of the…

Q: what is the pH of a solution that contains 0.75 M acetic acid (Ka= 1.8x10-5 ) and 0.50 Msodium…

A: Given data,Molarity of acetic acid=0.75MMolarity of sodium acetate=0.50MKa=1.8×10-5

Q: Calcula HNO2 ( A typic (acetyls Ka = 3. %3D 300ML the per

A: Concept pH of the solution can be calculated as: pH= - log [H+]

Q: Propionic acid is provided (pKa = 2.0) to make a 0.1 M buffer at pH = 2.0. What is the ratio of…

A:

Q: Calculate the expected pH of a buffer prepared by dissolving 1.3 mols of acetic acid and 0.4 mols of…

A: Given buffer solution pH calculated by using formula.

Q: 1.A chemist carries out a titration of 0.10M HCN with 0.10M NaOH. Which of the following indicators…

A: An acid-base titration is the titration used to determine the unknown acid or base concentration by…

Q: What is the pH (answer in 2 decimals) of a solution containing 0.25 M sodium formate (HCOONa) and…

A:

Q: What is the pH of a buffer solution that is 0.46 M chloroacetic acid and 0.29 M sodium…

A: Since chloroacetic acid is a monoprotic acid.

Q: How many moles of a diprotic weak acid with pkal = 4.1 and pka2 = 9.3 are in solution if addition of…

A: The answer is as follows:

Q: What is the pH of the solution containing 0.1M sodium formate (NaHCOO) and 0.05M formic acid…

A: Required data to determine the pH of buffer solution using Henderson equation.

Q: Hydrogen sulfide decomposes according to the following reaction, for which 104 at 1400 K: Kc = 2.20…

A: Given : equilibrium reaction

Q: how many liters of 0.54 monoprotic acid should be added to 685000 L of water with ph 7 to reach ph…

A: Given the desired pH of the acid solution with water = 5.2 Frist we have to find the [H+(aq)] from…

Q: What is the percent ionization of acetic acid (CH3COOH) in a solution that contains 0.10 M acetic…

A: Ionic solids are metal salts. They formed when metals form an ionic bond with non-metals. Ionic…

Q: A student needs to prepare a buffer made from HCO3 and with pH 6.690. If Ka for H2CO3 is 4.20 x…

A: Ka of H2CO3 = 4.2010-7pH = 6.690

Q: a.Both acids can be used  to buffer a solution at pH 4.0. b.The conjugate base of citric acid can be…

A: The higher the pKa means the weaker is the acid and we know that a Weaker acid has a strong…

Q: Suppose you have just added 100.0 ml of a solution containing 0.5000 moles of acetic acid per liter…

A:

Q: Benzoic acid has a Ka = 6.5 X 10-5.  What is its buffering range?     1-3     5-7     3-5…

A: The buffer range is defined as  the pH range where a buffer can resist the drastic change in pH by…

Q: 4. If you titrate 100 mL of an unknown strong acid solution with 0.1 M NaOH, will the pH ever reach…

A: Acid base titration: In acid base titration a solution of known concentration  is added to a…

Q: Which weak acid would be best to use when preparing a buffer solution with a pH of 9.1? An acid with…

A: Given: The pH value is 9.1

Q: pH = 10.31 Use the following table to predict the best acid/ base pair for the desired pH/pOH…

A: Given : To predict the best acid/ base pair for the desired pH value of 10.31.

Q: 3) What is the pH of a buffer solution made by adding 0.15 mole of lactic acid HC3H;O, and 0.12 mole…

A: Given, moles of lactic acid = 0.15 mole moles of sodium lactate = 0.12 mole Ka = 1.4 x 10-4  volume…

Q: You have an aliquot of 10 mL of 0.1042 mol/L phosphoric acid.  The ka values for phosphoric acid are…

A: The objective of this question is to calculate the resultant pH of a solution after mixing…

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.