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 is adding twice the amount of vinegar (the analyte in a titration) going to affect the amount of…

A: 1) when we add twice the amount of vinegar , the amount of NaOH will also become double . From M1V1=…

Q: Calculate the pH of a mixture that is 0.095 M in HF (pKa = 3.20) and 0.225 M in HC6H5O (pKa = 10.0).

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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: 3) Suppose each circle below represents a container of an aqueous solution of three different acids,…

A: The difference between a strong acid and a weak acid is how much they dissociate. Strong acids have…

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: Determine the Kb for a base by constructing an ICE table and using this information to construct and…

A: Given,  Molarity of CH3C6H4NH2 = 0.0160 M pH of the solution = 8.600

Q: NH3 is a weak base (Kp = 1.8 × 10-5) and so the salt NH,Cl acts as a weak acid. What is the pH of a…

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Q: A student found in a reference that the pka of a certain weak acid is 2.74. What is the ionization…

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Q: What is the pH of a solution that is 9.0×10-² M in TRIS in the acid form and 8.0×10-² M in TRIS in…

A: The given solution is a mixture of 9.0 × 10-2 M TRIS(acid) and 8.0×10-2 M TRIS(base) pKa = 8.3 As…

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: 3. Use the mean value you determined for Keq to calculate the SCN concentration in a solution whose…

A: The given reaction is Fe+3 + SCN- -> Fe(SCN)+2 Equilibrium constant ( Keq) =…

Q: What is the concentration of CO32– in a 0.030 M solution of carbonic acid, H2CO3? For carbonic acid,…

A: We will use common ion effect

Q: What is the pH (to two decimal places) of a saturated aqueous solution of LiF (at 25 °C)? Ksp = 3.8…

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Q: 1,2-Dichloroethane is a volatile organic compound that was once added to gasoline along with the…

A: A.    Let the concentration of 1,2-Dicholoroethane  = C mg/m3 the carcinogenic risk (R) = CDL ×SF…

Q: Which

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

Q: The ionization constant (K») of aniline (CsHsNH2) is 2.35 x 10-5, If 7.285 grams of aniline is…

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

Q: Use the Henderson-Hasselbalch approximation to calculate the pH of a solution prepared by dissolving…

A: Given Moles of strong base, Ca(OH)2= 0.080 mol Moles of strong acid, HNO3=0.080mol Neutralization…

Q: W 17 A 0.36 M hydrocyanic acid (HCN) solution has a pH of 4.87. Give: (a) the balanced equation for…

A: Given, Concentration(C) = 0.36 M pH = 4.87 pH = -log([H+]) [H+] = 10-4.87 = 1.35×10-5 M a)…

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: Consider the titration of a 50.00 mL sample of 0.100 M ethylamine, C2H5NH2, with 0.100 M HCl (aq.,…

A: Buffer solution are those solution which has constant pH and it contains both acidic as well as…

Q: Oxide ion, like sulfide ion, is a strong base. Write an equation for the dissolution of CaO in water…

A: The dissolution of calcium oxide in water and the equilibrium constant in it can be expressed as…

Q: On the basis of the Ksp of Al(OH)3, what would be the pH of a mixture consisting of solid Al(OH)3…

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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: 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: The pOH of an aqueous solution of 0.418 M quinoline (a weak base with the formula C₂H7N) is .(Assume…

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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: You titrate 0.4699 g HC3H5O3 with 23.88 mL NaOH. What is the molarity of this NaOH?

A: Molarity shows the concentration of solution, which is expressed as mol/L. Given: Mass of HC3H5O3 =…

Q: CH, NH, is a weak base (Kp = 5.0 x 10-"), so the salt CH, NH, NO, acts as a weak acid. What is the…

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Q: In the laboratory, a general chemistry student measured the pH of a 0.392 M aqueous solution of…

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Q: 3) One of the main buffer systems found in living organisms is the phosphate buffer system, often…

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

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: K for nitrous acid, HNO₂, is 4.5 X 10-4. What is the value of K, for the nitrite ion, NO₂?

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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: Lakes have a natural buffering capacity, especially in regions where limestone gives rise to…

A: Sulphuric acid in the lake contains H3O+ ions. when acid rain falls in the lake that contains…

Q: A solution containing a monoprotic weak acid (HA) that is 8.09% dissociated was found to have a pH…

A: A solution contains monoprotic weak acid (HA) that dissociate 8.09%  And PH = 1.92  [A-] = ? at…

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: Histidine has ionizable groups with pKa values of 1.8, 6.0, and 9.2, as shown below (His = imidazole…

A: The three pKa values shows that there are 3 replaceable hydrogens in the molecule(represented as…

Q: Acetic acid’s pKa is 4.75 and nitrous acid’s pKa is 3.16. If you made one buffer of equal parts…

A: Given: pKa of acetic acid = 4.75  pKa of nitrous acid = 3.16  And both the buffers have an equal…

Q: Explain what happens to the ratio of the two common forms of free residua! chlorine as the pH of…

A: Hypochlorite, ClO-(aq) is a conjugate base of HOCl.  #(i): Since HOCl(aq) and ClO-(aq) are conjugate…

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: Write the Ksp expression for the sparingly soluble compound iron(III) sulfide, Fe2 S3. (If either…

A: Since, In case of pure liquid and solid is not included in Ksp expression. Because it does not…

Q: Strong base is dissolved in 715 mL of 0.600 M weak acid (K₁ = 4.12 × 10-5) to make a buffer with a…

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

A: Recall the data from the question, pH = 12.123 Molarity of base= 0.476 M Kb(experiment) = ?