pKa values are different in different solvents. For example, the pKa of hydrofluoric acid (HF) in water is 3.45, but the pKa of hydrofluoric acid in DMSO (dimethyl sulfoxide) is 15.0. Choose the best explanation for the difference

Q: How do you find the equilibrium constants value for Na2CO3,NH4Cl,ZnCl2 and KAl(SO4)2. And would they…

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Q: Phosphate-buffered saline (PBS) is a solution commonly used in studies of animal tissues and cells.…

A: pH =?osmolarity =?

Q: The value of K, for hydroxylamine, NH,OH, is 9.10×10-9. Write the equation for the reaction that…

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Q: In the laboratory, a general chemistry student measured the pH of a 0.591 M aqueous solution of…

A: The pH of the solution = 9.268The concentration of the solution = 0.591 MThe  for base quinoline = ?

Q: 10.00 mL sample of 1.20 M HNO2 (analyte) (pKa = 3.34 and Ka = 4.57x10-4) is titrated with 1.20 M…

A: Given , pka = 3.34 Molarity of HNO2 = 1.20 M Volume of HNO2 = 10 mL Mmol of HNO2 = M × V   = 1.20…

Q: What is meant by (i) a qualitative analysis; and (ii) a quantitative analysis? Give two examples of…

A: •QUANTITATIVE ANALYSIS:- Quantitative analysis means measurement of amount or data. It is…

Q: The value of K for methylamine, CH3NH₂, is 4.20x10-4. Write the equation for the reaction that goes…

A: Given, Kb(for methyl amine ) = 4.20×10-4

Q: In the laboratory, a general chemistry student measured the pH of a 0.532 M aqueous solution of…

A: The expression that will be used in the calculation of Ka of the given formic acid and acetyl…

Q: The K, for acetic acid (CH,COOH) is 1.737 x 10-. What is the pK for this acid? pKa = Use the…

A: 1)          Ka(CH3COOH) = 1.737 x 10-5          pKa = -logKa = -log(1.737 x 10-5)          pKa =…

Q: n the laboratory, a general chemistry student measured the pH of a 0.578 M aqueous solution of…

A: Aspirin (acetylsalicylic acid) is a weak acid. The dissociation of weak acid is given as:HA ⇌ H+ +…

Q: In the laboratory, a general chemistry student measured the pH of a 0.317 M aqueous solution of…

A: In an aqueous solution of benzoic acid, C6H5COOH (aq)⇔C6H5COO- (aq) + H+ (aq)

Q: How the pH at the equivalence point is determined by the species present; why the pH at the midpoint…

A: pH is the measure of the acidic or basic nature of the substance. It is measured by the use of…

Q: Ka(experiment)

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Q: Which

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

Q: What will be the pH of a buffer solution containing an acid with a pKa of 5.4 with an acid…

A: We have to predict the pH of buffer solution.

Q: Salts containing the phosphate ion are added to municipalwater supplies to prevent the corrosion of…

A: GIVEN: pKa1 = 7.5 x 10 - 3 pKa2 = 6.2 x 10 - 8  pKa3 = 4.2 x 10 - 13 Concentration of Na3PO4= 1 x 10…

Q: calculate the pH and degree of dissociation

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Q: In the laboratory, a general chemistry student measured the pH of a 0.468 M aqueous solution of…

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Q: In the laboratory, a general chemistry student measured the pH of a 0.463 M aqueous solution of…

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Q: A mixture of ascorbic acid (C6H,06H, Ka = 6.8 x 105) and sodium ascorbate is prepared such that…

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Q: In the laboratory, a general chemistry student measured the pH of a 0.591 M aqueous solution of…

A: From the provided  and concentration, we can use the following formula to get the Ka (acid…

Q: A mixture of ascorbic acid (CH706H, K2 = 6.8 X 105) and sodium ascorbate is prepared such that…

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Q: What are the pKa values and buffering capacity of these following buffer components?…

A: To determine the pKa values and buffering capacity of these following buffer…

Q: 2. Given the following experimental data, calculate the molarity of the acid analyte (HA) in the…

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Q: The pH of a theoretical acid HX buffer is 4.22. If the solution was made using 25 moles of X and 15…

A: Given :-  pH of buffer = 4.22  Number of moles of X = 25 mol  Number of moles of HX = 15 mol  To…

Q: The dissociation constant of Methanoic Acid formula HCOOH is 1.8 x 10-4. What is the concentration…

A: Methanoic acid is a weak acid it does not dissociate completely. Partial hydrolysis is observed…

Q: Calculate the resulting pH of a solution made by mixing 45 mL of 0.42 M sodium carbonate with 41 mL…

A: A solution of a weak acid and its conjugate base acts as a buffer solution.Carbonate is the…

Q: What is the pH of a solution containing 0.876 mol L-1 of HCl and 1.069 mol L-1 of a weak acid with…

A: Strong acid dissociate completely so, the H+ concentration is more in the solution. And weak acid…

Q: Strong base is dissolved in 685 mL of 0.400 M weak acid (Ka = 4.21 × 10-³) to make a buffer with a…

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Q: Write the Ksp expression for the sparingly soluble compound silver carbonate, Ag2CO3. Ksp =…

A: SOLUTION: Step 1: The solubility product is denoted with KSP. The solubility product of a substance…

Q: In the laboratory, a general chemistry student measured the pH of a 0.476 M aqueous solution of…

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Q: Calculate the concentration of the hydroxide ion and write the equation for the dissociation of…

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Q: Use the information provided to determine the Ksp of the salt. A saturated iron(II) hydroxide…

A: Equilibrium reaction of iron(II)hydroxide: Fe(OH)2(aq)  ⇌ Fe2+(aq) + 2OH-(aq) pH + pOH =1410.62 +…

Q: Suppose you performed a titration of a weak acid and you found that the equivalence point occurred…

A: Given that,  The volume of NaOH required to reach the equivalence point = 19.51 mL And Acid is a…

Q: In the laboratory, a general chemistry student measured the pH of a 0.578 M aqueous solution of…

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Q: To what pH must a solution be adjusted to cause >95% of TOTAc to be present as the neutral acetic…

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Q: The pH of a saturated solution of a metal hydroxide MOH is 9.55. Calculate the Ksp for this…

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

Q: The desired pH is 6.4 in creating a buffer system/buffer solution of about 50-60mL. Therefore, a…

A: A buffer solution is made of a weak acid and the salt of that weak acid. The pH of the buffer does…

Q: 5.) What is K, for an acid whose pk, is 3.78?

A: This is the concept of converting terms

Q: The weak base colloquially known as Tris, and more precisely as tris(hydroxymethyl)-am inomethane,…

A: Buffer solution is the solution which resist to change the pH on the small addition of acid and base…

Q: A buffer solution contains 0.10M benzoic acid (C6H5COOH, Ka = 6.3 x 105) and 0.10M assium benzoate…

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Q: Calculate the pH of a 2.00 M Na2CO3 given that the pKa’s of the first and second dissociation of…

A: The pH for the solution of 2.00 M Na2CO3 is to be calculated. Given: pKa1 = 6.37 pKa2 = 10.32.…

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…