A 0.251 M aqueous solution of monoprotic weak acid is measured to have a pH = 5.36. What is the value of Ka for this acid?  Enter your answer in exponential format using a capital "E"  (example 1.23E-4) and no units (value ± 4%). The answer is 7.59*10^-11 but I would like an explanation please.

Q: Calculate the pH at 25 °C of a 0.80 M solution of potassium butanoate (KC, H,CO,). Note that…

A: Given,  [KC3H7CO2] = C = 0.80 M  pKa value of HC3H7CO2 = 4.82  Calculate the pH = ?

Q: The pH of a 1.4M solution of acetic acid (HCH,CO,) is measured to be 2.30. Calculate the acid…

A: Given- pH=2.30 Concentration of acetic acid= 1.4M

Q: Q1//A solution of o.1 M of BX salt with pH=9.5, the HX is weak acid and BOH a strong base. Calculate…

A: Since the exact question is not mentioned we only answer the first question. Please resubmit the…

Q: What is the pH of a solution that is 0.10 M in acetic acid, HC2H3O2, and 0.52 M in sodium acetate,…

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The…

Q: What is the resulting pH of a solution at 298 K made by mixing 50.0 mL of 0.355 M HCl and 25.0 mL of…

A:

Q: pH calculation after the second equivalence point:   Calculate the pH of 50.0 mL of 0.250 M oxalic…

A: Answer: This question is based on acid-base titration where base solution is being added into the…

Q: Calculate the pH that results when the following solutions are mixed together. Assume that the total…

A: pH of the solution is determined based on the concentration of the hydrogen ions in the solution.…

Q: A solution of methylamine, CH3NH2, behaves as a weak base. The equilibrium can be written as: CH3NH₂…

A: Methylamine CH3NH2 is a weak base. It dissociate partially in aqueous solution. CH3NH3+ is a…

Q: Determine the pH of solution if 0.085g of acetylsalicylic acid, HC9H7O4, (Ka = 3.0 x 10-5) is…

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Q: Abbreviating malonic acid, CH2(CO2H)2, as H2M, find the pH and concentrations of H2M, HM, and M2…

A: a.

Q: Caculate the pH of a solution prepared by mixing 84.7 mL of a 0.25 M aqueous aniline solution…

A:

Q: is reached: Calculate the pH of 50.0 mL of 0.250 M oxalic acid (HOOCCOOH) upon addition of 50.0 mL…

A:

Q: You have two aqueous solutions, (1) and (2), at 45°C. Fill in the missing values for each of these…

A: pH + pOH = pKw

Q: Diethylamine, (CH3CH2)2NH, has a Kb of 8.6 x 10-4.  What is the pH of a 0.22 M solution of…

A:

Q: A 0.050 M solution of the salt NaA has a pH of 9.00. Determine the [OH] and the pH of a 0.010 M…

A: Initial pH = 9.0 Calculation of [H+]: pH=-log [H+]9=-log…

Q: A solution of acetic acid, HC2H3O2, on a laboratory shelf was of undetermined concentration. If the…

A:

Q: at 95 ℃ water has an autoionization constant (Kw) of 4.518 X 10-13. Determine the ph of pure water…

A: Given :- Kw at 95°C = 4.518 × 10-13  To determine :- pH of pure water at 95°C

Q: Calculate the pH of a 0.0076 M solution of acetic acid, CH3COOH. The Ka of acetiç acid = 1.8 x 10-5.…

A: Kaa of acetic acid = 1.8× 10- 5  initial concentration of acetic acid = 0.0076 M

Q: Calculate the K₂ for a monoprotic acid, HX, if a 0.100000 M solution has a pH of 3.333. The data is…

A: The given reaction is : HX     +     H2O      ⇔       X-     +     H3O+ The answer is as follows:

Q: When you determine the pH of a 0.020 M solution of a weak acid whose Ka = 6.3 x10-5, which…

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Q: 1. Arrange the following in order of increasing pH of their corresponding solutions. a. CH3NH3Cl,…

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Q: Determine the pH of a solution that is prepared by dissolving 7.7 g of Ba(OH), in 7.7 L water at…

A: Mass of Ba(OH)2 = 7.7 g   Volume of solution = 7.7 L  We need to determine pH of this solution.  We…

Q: pH calculation at the initial point: Calculate the pH of 50.0 mL of 0.250 M oxalic acid (HOOCCOOH)…

A:

Q: What is the calculated pH of the initial 0.100M Acetic Acid solution?  Ka = 1.8 x 10-5 .  Give your…

A: The dissociation reaction of acetic acid is given below: CH3COOH(aq) + H2O(aq) ⇌ CH3COO-(aq) +…

Q: The Kb of aminoethanol, HOCH2CH2NH2 is 3.1 x 10-5  Write ionization equation of the aminoethanol in…

A: The species which gets formed after accepting a proton in specified solution is "conjugate acid"…

Q: Determine the pH of a solution that is prepared by dissolving 7.9 g of Ba(OH)2 in 1.9 L water at…

A: Molar mass of Ba = 137.3g/mol  Molar mass of O = 16.00g/mol  Molar mass of H = 1.008g/mol

Q: You have a 48.5 g mixture that contains potassium propanoate (CH3CH2COOK) and Propanoic acid…

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Q: CH3CH₂COOH(aq) + H₂O(l) → CH3CH₂COO (aq) + H30* (aq) Propanoic acid, CH3CH₂COOH, is a carboxylic…

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Q: The pH of a 0.65 M solution of acrylic acid (HC, H,CO,) is measured to be 2.22. Calculate the acid…

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Q: I have some acetic acid that dissociates in water.  [CH3COOH]= .405 M [CH3C00]= .505 M Ka= 1.8 x…

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Q: Which of the following 1.25M aqueous solution will have the lowest pH? (Qualitative analysis only,…

A: Concentration = 1.25 M ->Base has pH greater than 7. ->Acids has pH less than 7. ->Neutral…

Q: An acid HA has a Ka of 1.00 x 10-7. Calculate the pH of a 0.100 M solution of its conjugate base.…

A: Given: Concentration of conjugate base of weak acid HA i.e. A- = 0.100 M And Ka of HA = 1.00 × 10-7…

Q: Calculate the pH of a 0.094 M solution of formic acid, H2CO2. The Ka of formic acid 4 x 10-4 Submit…

A: In case of weak acids , the H+ ion concentration is given by the following formula  [H+] = (Ka×C)1/2…

Q: Normally, the volume of gastric acid in the human stomach ranges from 20. mL to 100. mL and a pH…

A: The of a solution is the negative logarithmic of hydrogen ion concentration in the solution.…

Q: Determine the pH of the solution (to 2 decimal points) after the addition of 25.7 mL of 0.0103 M…

A: Millimoles of Ca(OH)2 = M x V = 0.0103 x 25.7 = 0.26471 mmol Millimoles of OH- ion produced by…

Q: Determine the Ka value [H +]eq Solution 5  4.68 X 10-10 M Directions Take a 30.0 mL sample…

A: The concentration of hydroxyl ion is calculated as follows:

Q: Trimethylamine, (CH3)3NH2, is a gas with a fishy, ammonialike odor. A 0.25 M aqueous solution of…

A: Since you have posted multiple questions, we are entitled to answer the first only. NOTE : The…

Q: The Kb for four bases are CN'- = 1.6 x 10$, CO3²- = 2.1 × 104, NH3 = 1.8 × 10$, F'- = 1.5 × 10-1".…

A:

Q: Methyl Amine (CH3NH2) is a weak base with a Kb of 4.38 x 10-4. What would be the pH of a solution of…

A: The above salt is a mixture of weak base and strong acid. When it dissolves in water it forms an…

Q: A student is asked to design an experiment that uses indicators to identify which of three unknown…

A: Data and solution is done in step 2.

Q: Calculate the pH that results when 2.35 mL of a 0.0125 M aqueous solution of KOH is added to 23.50…

A: On addition of KOH, it reacts with the conjugate acid CH3NH2 and hence increases the concentration…

Q: pH calculation after the second equivalence point: Calculate the pH of 50.0 mL of 0.250 M oxalic…

A: Oxalic acid is a diprotic weak acid, whereas monoacidic NaOH is a strong base. Given the volume of…

Q: Calculate the pH of a 0.020 M solution of phenylacetic acid, C6H5CH2COOH. What will be the pH if the…

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Q: Calculate the pH of a solution of 0.01 M NaF, given Kb for F- = 1.4 x 01-11. Group of answer…

A: NaF <---> Na+ + F-  ICE Table –       F-   +     H2O <---> HF    +    OH- I   0.01…

Q: Show all work to find the pH of a 0.675 M solution of the basic salt, NaA. the acid dissociation…

A:

Q: A 50.0 mL solution of the weak acid HA (Ka = 1.00 × 10-6) has a pH of 4.000. What volume of water…

A: Given, Initial volume of HA  = 50.0 mL The initial pH value of HA at 50.0 mL = 4.000 The final pH…

Q: What equation or expression would be used to calculate the Ka of the acid in the following…

A: Given: Concentration of hydroxylamine = 0.55 M pH at 25℃ = 3.78

Q: Calculate the pH of 50.0 mL of 0.250 M oxalic acid (HOOCCOOH) upon addition of 31.9 mL of 0.500 M…

A: Answer: In this question we have to find out the pH of a buffer solution made from the mixture of…

Q: In the laboratory, a general chemistry student measured the pH of a 0.429 M aqueous solution of…

A:

Q: 15. Calculate the pH of a solution after 28.00 mL of 0.28 M acetic acid with 15.00 mL of 0.11 M…

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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.