Which indicator would be most appropriate for the titration of ammonia (pKa=9.3) and HCl? The answer is Phenol red, but why?

Q: You are titrating a solution containing 1.50 g of a weak acid, HA. The initial pH of this solution…

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Q: A diprotic acid is titrated with a strong base. The pH at the first half-equivalence point is…

A: During the acid-base titration where weak acid is the analyte and strong base is the titrant and as…

Q: An analytical chemist is titrating 185.4 mL of a 0.3800M solution of propionic acid (HC₂H5CO₂) with…

A: Given,  Molarity of propionic acid (HC2H5CO2 ) = 0.3800 M.  Volume of propionic acid (HC2H5CO2 ) =…

Q: Calculate the pH of a buffer solution that contains 0.34M benzoic acid and 0.49 M potassium…

A: Using Henderson equation , we can solve this problem. Here benzoic acid is weak acid and potassium…

Q: Calculate the pH in a titration of 40 mL (0.040 L) of 0.100 M barbituric acid (Ka = 9.8 × 10−5) with…

A: Given :  40 mL of 0.100 M barbituric acid  (Ka = 9.8 × 10−5) 29.3 mL of 0.100 M KOH  To find :  pH…

Q: The pKa of hypochlorous acid is 7.530. A 54.0 mL solution of 0.125 M sodium hypochlorite (NaOCI) is…

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Q: A sample of 0.100 mole of acetic acid (Ka = 1.8 ´ 10−5) in 50.0 mL of solution is titrated with…

A: Acetic acid is a weak acid and is titrated against a strong base NaOH.50ml of  0.1 mole of acetic…

Q: An analytical chemist is titrating 165.5 mL of a 1.100 M solution of propionic acid (HC,H,CO,) with…

A: Given, 165.5 mL of 1.100 M solution of Propionic acid  497.9 mL of 0.3900 M solution of KOH

Q: If 24.8 mL of 0.107 M acid with a pKa of 5.76 is titrated with 0.102 M NaOH solution, what is the pH…

A: pH = pKa + log [salt]/[acid] Number of moles = molarity x volume (L)

Q: Assume that 32.0 mL of a 0.10 M solution of a weak base B that accepts one proton is titrated with a…

A: Acid and base react with each other to form salt and water. The nature of salt depends on the nature…

Q: Calculate the pH in a titration of 40 mL (0.040 L) of 0.100 M barbituric acid (Ka = 9.8 × 10−5) with…

A: We will first calculate the concentration of acid and salt. Salt is formed when we add KOH to the…

Q: A buffer can be prepared from a weak acid, HA, and it's conjugate base, A⁻. A 1L solution is…

A: Given data,[HA]=0.2M[A-]=0.1MpKa=7.5Molarity of KOH=1MVolume of KOH=50mL0.05LVolume of buffer=1L

Q: In a titration of 80.0 mL of a 0.500 M solution of the diprotic acid H₂C3H₂O4 (malonic acid) with…

A: The balanced equation for the titration is H2C3H2O4(aq) + 2NaOH →Na2C3H2O4 (aq)+2 H2O(l)

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: A chemistry graduate student is given 300. mL of a 1.40M ammonia (NH, solution. Ammonia is a weak…

A: Given: The volume of NH3 is 300 mL. The molarity of NH3 is 1.40 M. pH is 9.81. Kb is 1.8×10-5.

Q: A chemistry graduate student is given 100. mL of a 1.40M methylamine (CH3NH2) solution. Methylamine…

A: pKb  = - log Kb            =  - log (4.4  * 10-4 )          = 3.36pKa = 14-pKb       = 14- 3.36…

Q: An analytical chemist is titrating 160.3mL of a 0.8600M solution of benzoic acid HC6H5CO2 with a…

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Q: If 25,0 cm3 of the NH3 (concentration 0,10 mol∙dm–3) is titrated with the HCl (concentration 0,10…

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Q: 1. The pH of a buffer solution containing 0.5 mole/litre of CH:COOH and 0.5 mole/litre CH.COONA has…

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Q: What is the pH of the resulting buffer solution when 25mls of 0.10 M NaH is added to 25mls of 0.200…

A: pH of the buffer solution is calculated by using Henderson equation, it is,

Q: An analytical chemist is titrating 101.8 mL of a 1.100M solution of benzoic acid (HC HCO₂) with a…

A: A solution of benzoic acid 1.100M x 101.8ml = 111.98 mmol  is titrated with 0.2600 M × 514.6 ml  =…

Q: In a titration of 77.0 mL of a 0.500 M solution of the diprotic acid H₂C₃H₂O₄ (malonic acid) with…

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Q: A certain indicator, HA, has a K, value of 1.0 × 10-5. The protonated form of the indicator is red…

A: pKa = -log Ka pH = -log[H+]

Q: The pH of a bicarbonate-carbonic acid buffer is 6.18. Calculate the ratio of the concentration of…

A: The ratio of [H2CO3] to that of [HCO3-] is determined by using Henderson-Hasselbalch equation.

Q: Which of the following titrations result in an acidic solution at the equivalence point?…

A: Answer -  Equivalence point - The equivalence point  is the point in a chemical reaction when there…

Q: Consider a beaker containing 50 mL of 0.20 M of a weak acid (HA) with a pKa of 5.25.    How many…

A: Henderson equation is pH = pKa + log [salt][acid] when NaOH is added to weak acid then they react to…

Q: the titration of 100.0 mL of 0.050 M CH3COOH (pKa = 4.74) solution, what will be the pH after adding…

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Q: If you were trying to prepare a buffer with ammonia, NH3, what would be the substance that you would…

A: 1. Buffer solution are those whose pH value doesn't chage appricableby addition of small of acid…

Q: The acid HZ has a pKa of 7.03.  If 25.00 mL of a 0.111 M solution of HZ are titrated with 0.100 M…

A: The objective of the question is to determine the pH before the addition of any base.It is given…

Q: An analytical chemist is titrating 69.9 mL of a 0.2200M solution of cyanic acid (HCNO) with a…

A: Volume of cyanic acid (HCNO) =69.9 mLConcentration of cyanic acid (HCNO) = 0.2200 MVolume of KOH =…

Q: An analytical chemist is titrating 68.1 mL of a 0.6500M solution of propionic acid (HC,H,CO,) with a…

A: The given data is as follows: The concentration of propionic acid = 0.6500 M The volume of propionic…

Q: Near the equivalence point in the titration of a strong acid with a strong base, one drop of base…

A: The pH of a solution is the negative logarithm of hydrogen ion concentration. It can be written as:…

Q: A certain indicator, HA, has a K value of 0.00025. The protonated form of the indicator is blue and…

A: • The values provided in the question are:-  i) Ka value of a certain indicator HA = 0.00025    •…

Q: A titration curve is constructed by titrating 50.0 mL of 0.100 M solution of a weak acid, HA, with…

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Q: In a titration of 35.0 mL of a 0.500 M solution of the diprotic acid H₂C₃H₂O₄ (malonic acid) with…

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Q: In a titration of 34.0 mL of a 0.250 M solution of a triprotic acid H3PO4 (phosphoric acid) with…

A: The question is based on the concept of titrations. We are titrating a weak triprotic acid with a…

Q: pKa What is the color of this indicator in a solution with pH = 3? purple blue red about us careers…

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Q: If 25,0 cm3 of the NH3 (concentration 0,10 mol∙dm–3) is titrated with the HCl (concentration 0,050…

A: Given data, Molarity of NH3=0.10mol/dm3=0.10mol/LVolume of NH3=25.0cm3=0.025LMolarity of…

Q: You need to prepare 100.0 mL of a pH 4.00 buffer solution using 0.100 M benzoic acid (pK, = 4.20)…

A: Given,  Volume of the buffer solution = 100.0 mL  pH = 4.00  [Benzoic acid] = 0.100 M  [Sodium…

Q: The half‑equivalence point of a titration occurs half way to the equivalence point, where half of…

A: There are two types of bases/acids. One is strong base/acid which is completely dissociable in into…

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.