A student found in a reference that the pka of a certain weak acid is 2.74. What is the ionization constant of the acid, ka?

Q: 1,2-diaminoethane, H2N-CH2-CH2-NH2, is used extensively in the synthesis of compounds containing…

A: since you have posted multiple questions in a single session we are entitled to answer only first…

Q: What is the pH of a 0.250 M solution of aniline (C₆H₅NH₂, Kb = 4.3 × 10⁻¹⁰)?

A: Given data,Molarity of aniline=0.250MKb=4.3×10-10

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

A: Value of pH is sued to measure acidity or basicity of a solution. Value of pH lies in the range from…

Q: 5) The oxides and hydroxides of gallium exhibit both acidic and basic behaviors B) What is pCa for a…

A: Gallium metal is stable in dry air. It gradually oxidizes in moist air to form a protective film…

Q: What is the pH of a 0.40 M solution of sodium nitrate, NaNO2 ? The pKa for nitrous acid (HNO2) is…

A: Base dissociation constant Kb is utilized to determine the basic nature of a solution. It refers to…

Q: In 100-200 words, Differentiate acidimetry from alkalimetry.

A: We have to differentiate  acidimetry from alkalimetry as follows in step 2:

Q: Calculate the pH for a mixture of one mole of benzoic acid and one mole of sodium benzoate. The pKa…

A:

Q: weak

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

Q: QUESTIÓN 23 The Ka of HCIO is 3.00 x 10, What is the pH of a 0.0385 M aqueous solution of this acid?…

A: Given, the concentration of HClO =0.0385 MKa for the HClO =3.00×10-8we are asked to calculate the pH…

Q: 18. Calculate the pH of the solution formed when 12.0g of sodium fluoride (0.286mol) (NaF, FW- 41.99…

A: For a buffer- pH = pKa + log[Base][Acid]   Now, pKa = - log Ka = 3.19 [Acid] = 0.5 M [Base] = 0.286…

Q: The pKa for the first protonation of nicotine (2) is 8.02. What is the pH and the fraction of…

A:

Q: The dissociation constant, ka, of a weak acid is 5.9 x 10-6. What is the pKa of the acid?

A:

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 mixture of 0.15 M acetic acid and 0.34 sodium acetate is given. Calculate the pH of the medium if…

A: The given data contains, Acetic acid = 0.15 M. Sodium acetate = 0.34 M. pKa of acetic acid = 4.87

Q: Which of the following acid/ conjugate base pairs would function best as a buffer at physiological…

A: 1- First we should know about physiological pH it's value is 7.40 it's maintain the blood pH because…

Q: How does pKa relate to acid strength?

A: For any weak acid, let's say HA, pKa is the relationship between the dissociation constant of acid.…

Q: Write the chemical reaction for the ammonium ion in water, whose equilibrium constant is Ka, Include…

A: Here, for reaction in between ammonium ion and water, some factors need to be addressed so that…

Q: 1,2-diaminoethane, H2N-CH2-CH2-NH2, is used extensively in the synthesis of compounds containing…

A: The dissociation reaction is given as, H2N-CH2-CH2-NH2 + H2O →H2N-CH2-CH2-NH3+ + OH-

Q: Čalculate the molar concentration of ÕH- in a 0.050 M solu- tion of ethylamine (C2H;NH2; Kp, the pH…

A:

Q: A hypothetical weak acid, HA, was combined with NaOH in the following proportions: 0,20 mol HA, 0,08…

A:

Q: What is the pKa value of Tris-HCl?

A: The molecular formula of Tris-HCl is: NH2C(CH2OH)3 ·HCl

Q: The ionization constant, Ka, for benzoic acid is 6.28 x 105. What is the pK, of this acid? a. 1.59 x…

A: Benzoic acid [C6H5COOH] is a monoprotic weak acid, in solution it partially ionizes and gives an…

Q: What is the pH of a solution of 0.06 M of H2CO3, pKa1 = 6.4 and pKa2= 10.3?

A: We will calculate pH

Q: escribe  the curve and why pH = pka at half equivalence point

A: pH is negative logarithm of Hydrogen ion concentration

Q: At what pH is the concentration of a compound, with a pKa = 8.4, 100 times greater in its basic form…

A:

Q: What is the relationship of potassium with PH ?

A: Interpretation- We have to tell the relationship of potassium with the pH -      Introduction -…

Q: What is the pH value of sodium hydroxide if it has a power of hydrogen (pOH) of 2.46?

A: pOH of sodium hydroxide = 2.46  pH  of sodium hydroxide = ?

Q: Given the pKa of hypochlorous acid, HOCl, is 7.54.   What is the pH of a solution which consists of…

A: The solution consist of weak acid HOCl and its conjugate base OCl- that results in the formation of…

Q: Calculate the pH of a 0.325 M solution of a weak base whose conjugate acid has a pka-5.155.

A:

Q: Calculate the molar concentration of a purified enzyme (MW 25000 Dal) in a solution of 0.10 g/ml of…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: NOH2PO4 and Na2HPO4 For what ratio between the concentrations of the two substances above would the…

A: The given buffer solution is a mixture of weak acid  NaH2PO4 and conjugate base Na2HPO4 . The pH of…

Q: The pKa of a particular weak acid is 4.85. What is the pH of the weak acid solution when exactly…

A:

Q: Fluoride treatment strengthens tooth enamel by converting hydroxyapatite, Cas(PO4)3OH, into…

A: Solubility product (Ksp) basically exhibits equilibrium that exists between particular solid and its…

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: A 0.200 M solution of nitrous acid (HNO2) had a pH of 2.07. What is the Ka value for nitrous acid.

A: Nitrous acid is a weak acid.

Q: Solubility of gases in water increases with increasing mass. Explain?

A: Since you have posted multiple questions, we will answer only first question for you. If you want…

Q: If the acetate to acetic acid ratio of a solution is five, what is its pH? The pKa of acetic acid is…

A: We have to determine the pH of a solution which has both acetic acid and acetate ion and the acetate…

Q: Alizarin yellow R, Ka = 7.9 x 1012, is yellow in its protonated form (HX) and red in its ionized…

A: Alizarin yellow (R)  be a distinct orange color when,…

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: The acid dissociation constant, Ka, for phosphorous acid is 7.1 x 10-3 . If the concentration of the…

A: Given data : Dissociation constant for phosphorous acid = 7.1 x 10-3 Concentration of Hydrogen…

Q: What is the pH of a buffer solution that contains 0.245 M weak acid and 0.450 M of the conjugate…

A:

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…

A:

Q: Calculate the pH of 0.20 M sodium asparaginate, ka= 1.86 x 10^-9

A: Given, Concentration of sodium asparaginate = 0.20 M Ka = 1.86 * 10-9       Required,…

Q: a. What is the value of k in s?

A: We have to find rate constant, decay rate and time needed to do experiment  Given half life = 16…

Q: Three acids found in foods are lactic acid, LA, (in milk products), oxalic acid, OA, (in rhubarb),…

A: Answer:- This question is answered by using the simple concept of weak acid strength which is…

Q: The pka of a particular weak acid is 4.85. What is the pH of the weak acid solution when exactly…

A:

Q: what is the pKa of the acid?

A: Given :- pH of solution = 4.9  Concentration of conjugate base = x  Concentration of acid = 2.3 x…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".