Aspirin has a pka 5 it will be more than 99% ionized in wha

Q: A 0.045 0 M solution of HA has a pH of 2.78. Find pKa for HA.

A: Given, initial concentration of HA = 0.0450 M             pH = 2.78 We know that, pH can be…

Q: Hand soap is effective at preventing bacterial contamination. Calculate the hydronium ion…

A: Given, pH = 10.5 Hydronium ion concentration = [H3O+] = ? Note: pH : it can define have the negative…

Q: The pKa of a particular weak acid is 4.81. What is the pH of the weak acid solution when exactly…

A: When half of the acid has been neutralised, that means the concentration of acid remaining will be…

Q: A 0.495M solution of nitrous acid, HNO2, has a pH of 1.83. Calculate the value of Ka for nitrous…

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Q: PART A Ammonium cation (NH4 +) has a pKa of about 9.3. What is true of this compound when the pH is…

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Q: The pH of an aqueous solution of weak monoprotic acid is 3.15. What is the initial…

A: All the details are explained in handwritten solution.

Q: 8. (a) Compare between Electron ionization (EI) and Chemical ionization methods.

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Q: An organic acid has pKa = 4.70. What is its Ka value?

A: Ka = 10 -pka  Explanation = pKa     = -log10Ka -pKa  = log10Kanow Ka = 10-pKa

Q: John made a buffer solution A at pH =8, and pKa = 9.

A: Given: Buffer solution A have pH= 8 pKa = 9 To determine: The buffer solution A have more buffer…

Q: Knowing the approximate pKa values above will help in answering this question. 3. pH = 3.0 Which…

A: pKa value is more less acidic nature.  In generally anion less pKa value that means basic nature.…

Q: weak

A: We used the Hinderson equation for calculating the concentration of salt ( NaA ) and it's acid ( HA…

Q: A weak acid has a pKa of 8.48.  What is the pH if the solution has 3,444 times more HA than A-?

A: The most effective buffers contain a weak acid with pKa value close to the buffering pH and its…

Q: a pka value of 9 has more charged or more neutral molecules in a solution with the pH value:

A: If a base receives one proton, then the formed species is a conjugate acid whereas an acid lose one…

Q: 3. Some projection models put the carbon dioxide concentration at 1255 ppm by the year 2100.…

A: Henry's law: It states that the partial pressure of that gas above the liquid is directly…

Q: Each of the following salts were dissolved in water to give a 0.10 mol.L·' solution. Rank the…

A: The compounds given are Na2S, Na3PO4, NaF, NaCH3COO and AlCl3.

Q: A weak acid, HA, has a pKa of 4.838. If a solution of this acid has a pH of 4.675, what percentage…

A: Given:pKa = 4.838pH =4.675

Q: A student determines that the value of pKa for CH3COOH = 4.57 . What is the value of Ka?

A: Carboxylic acids (containing -COOH), such as acetic and lactic acids, normally have a Ka constant of…

Q: What is the pH of a solution made by adding 5.0 mL of 0.80 M NaOH to a 10.0 mL solution of 1.0 M…

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Q: 0.270 M monoprotic weak acid solution has a pH of 2.50. What is the pKa of this acid? a. 4.43 b.…

A: Given: Concentration of weak acid = 0.270 M pH of solution = 2.50

Q: The hydronium ion concentration of 0.120 M nitrous acid solution (Ka for nitrous acid = 7.1 x 10-4)…

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Q: Hypochlorous acid, HClO, has a pKa of 7.54. What is [ ClO− ] in 0.115 M HClO?    [ ClO− ] =   × 10…

A: Given:Pka = 7.54[HClO] = 0.115 M

Q: Which of the following acids has the Lowest pOH? 0.1 M HBO, pKa = 2.43  0.1 M HA, pKa = 4.55 0.1…

A: Recall the following relations         pH=12pKa-12logCand pH + pOH=14 Here,values of concentrations…

Q: Calculate the pH values of the following solutions: a) a 0.1 M solution of protonated methylamine…

A: Given data: Concentration of methylamine = 0.1M Concentration of HCOOH  = 0.3M Concentration of…

Q: Some projection models put the carbon dioxide concentration at 1255 ppm by the year 2100. Calculate…

A: KH=.034 mol/L .atm

Q: Acetic acid pKa = 4.76, what does Ka =_________ M

A: The equation is given as:

Q: Hypochlorous acid, HOCl, is a weak acid having a pKa = 7.46. (a) Show the balanced chemical equation…

A: Given that :  For HOCl,  pKa = 7.46  We need to find pKb and pH of solution when [OCl-] = 0.050 M

Q: substance with a pH of 2 is?

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Q: For the expression pH=pK₂ + log What is [A]? [B] [A] the pH = 4.130, the pka = 4.200, and [B] =…

A: Answer: Both the questions are based on the skillset of solving the mathematical equation in…

Q: a 1L, 0.1M, pH = 7.4 buffer solution. The weak acid is 0.5M, pKa = 8.6. The conjugate base is 0.1M.…

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Q: For H2CO3, pKa1-6.35 and pKa2=10.33. If the pH of an aqueous solution initially containing 0.10 M…

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Q: Calculate pH of water solution of Hydrosulphuric acid with concentration of 0,050 M (pKa=6.99)

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Q: What is the pH of a solution that is 0.05M in ethylamine and 0.08M in its chloride salt (pKa=10.8)

A: pH of a solution =?    [ C2H5NH2 ] = 0.05 M    [ C2H5NH3+ ] = 0.08 M Acid dissociation constant :…

Q: Why is sodium hydrogen carbonate an essential ingredient is antacids?

A: Sodium hydrogen carbonate or baking soda is a salt of strong base and weak acid. Hence, the pH of…

Q: Sulfurous acid, H2SO3, is diprotic: pka1= 1.81, pka2= 6.91. Calculate the concentrations of all acid…

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Q: A weak acid has a pKa of 7.48. What is the pH if the solution has 6,753 times more HA than A-?…

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Q: An organic acid has pka = 2.87. What is its Ką value?

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Q: At what pH is the concentration of a compound, with a pKa = 3.7, 10 times greater in its acidic form…

A: Given information: pKa = 3.7 [Acid] = 10[Base]

Q: Saccharin, a sugar substitute, is a weak acid with pKa = 2.32 at 25°C. The % ionization in a 0.10 M…

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Q: Calculate the pH and ionization percentage of 0.2 M ammonium hydroxide solution if PKa = 4.7…

A: PH = 9 and % = 0.005 %  But this option is not given

Q: Which one of the following substances is/are amphoteric? (2) HS-1 (3) PO43- 1-*OSH (1) 2 only 3 only…

A: 1. HSO4-1 : - This compound is  amphoteric meaning that in water it can behave as both a proton…

Q: A weak acid, HA, has a pKa of 4.268. If a solution of this acid has a pH of 4.853, what percentage…

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Q: You make a solution of a weak acid with a pH of 3.75 and the pka is 5.42 1. Is the solution acidic…

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Q: A wine was tested for acidity, and its pH was found to be 3.13 at 25°C. What is the hydronium

A: Negative logarithm of hydronium ion concentration is called pH  For pH calculations hydronium ion…

Q: The pH of an aqueous solution of weak monoprotic acid is 3.15. What is the initial…

A: Given that  pH of weak monoprotic acid = 3.15  pKa for weak monoprotic acid = 5.74 For weak acid, pH…

Q: In an aqueous solution of a certain acid with pKa = 2.73 the pH is 2.09. Calculate the percent of…

A: This problem can be solved by Henderson- Hasselbalch Equation and from this equation find the ration…

Q: Calculate the pH values of the following solutions: a. a 1.0 M solution of acetic acid (pKa = 4.76)…

A: From given data For part (a)                              pKa=4.76 [CH3COOH]=1.0 M For part (b)…

Q: Calculate the degree of ionization of morphine, pKa 8.0, in a solution with a pH of 2.2. Predict how…

A: The question is placed on the concept of equilibrium. we have to identify degree of dissociation of…