A 0.051 M solution of a weak acid has a pH of 2.09. Calculate the acid ionization constant (Ka) of the acid. Express your answer to 2 significant figures. Ka

Q: Determine the Ka for an acid, HA, if a 0.50 M solution has a pH of 4.5. (Input answer in exponential…

A: Intrdouction :  We have to calculate Ka . Given :  Initial concentration of HA = 0.50 M  pH = 4.5

Q: Benzoic acid is a weak acid that has antimicrobial properties. Its sodium salt, sodium benzoate, is…

A:

Q: Calculate te ptt of te fllowing: 5. A solution that contains 0.10 M ammonium hydrochloride and 0.010…

A: Given that -  Molarity of ammonium chloride, NH4Cl = 0.10 M  Molarity of HCl = 0.010 M  Also , pKa…

Q: 10 11

A: A 50 mL burret is shown on the right. What volume of titrant does it hold?

Q: A 349 ml buffer soltution is 0.372 M in nitruous acid (HNO2) and 0.346 M in sodium nitrate (NaNO2).…

A: Buffer solution is defined as solution whose pH remain unchanged upon addition of small amount of…

Q: 1. Determination of Vitamin C in Grape Juice acid, which gives the characteristic citrus taste to…

A: Citrus fruits contain Vit C. It is antioxidant that is essential for human body. Vit C content can…

Q: The hydronium ion concentration in a buffer solution consists of 0.200 M formic acid and 1.00 sodium…

A:

Q: (5) 10. If we doubled the concentration of the buffer (used twice the concentration of acetic acid…

A:

Q: 2. A 0.100 mol/L solution of methanoic acid (HCHO₂) has a pH of 2.38. Calculate percent ionization,…

A:

Q: A solution was prepared by mixing 20.0 mL of o.050 M HCl and 5.00 mL of 0.1 M NaOH. What is the pH…

A: Given: The volume of HCl, (V1) = 20 mL. The volume of NaOH, (V2) = 5 mL. The concentration of HCl,…

Q: (1) Mass of KHP (g) 0.6364 g (2) Moles of KHP Convert to moles (M.W. 204.22 g/mole) (3) Initial…

A: Given that, the mass of potassium hydrogen phthalate (KHP) = 0.6364 g and the molecular weight of…

Q: What is the [H⁺] in a blood sample that registers 7.30 on a pH meter?

A:

Q: Use the graphs below to answer the following questions. titrant - titrant titrant titrant (A) (B)…

A:

Q: A solution is made from 0.56 M NH3 and 0.49 M NH4CI. What is the pH if the Kp for NH3 is 1.8x10-57…

A:

Q: b) Answer the following questions related to titration technique i) What is difference between…

A: (i) Acidimetry titration v/s Alkalimetry titration       Acidimetry      Alkalimetry It…

Q: Table of Indicator Colour Changes pH Indicator 3 4 5 6 7 8 9 10 11 12 Bromophenol blue Yellow 3.0 –…

A: The color change by an indicator is not shown abruptly at any particular pH value. However, the…

Q: When a 27.3 mL sample of a 0.322 M aqueous hypochlorous acid solution is titrated with a 0.469 M…

A: 1.) Hypochlorous acid ia a weak acid and potassium hydroxide is a strong base , so they will react…

Q: Calculate Kb for a 0.1 M solution of acetate ion, given that Ka for acetic acid is 1.8 x 10−5.

A: Given : Ka = 1.8 x 10-5

Q: Use 0.50L of the buffer made from 2.5M citric acid and 0.5M sodium citrate to answer the following:…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: Calculation of the ionization constant for acetic acid from the measured pH of the acetic acid…

A: Given, Average pH = 3.11

Q: Consider an acid-base titration in which the base is dispenssd from a burette into a flask…

A: For an acid- base reaction , M×V (acid) = M×V (base)where,M = MolarityV = Volume M (acid) = M×VV…

Q: There are two half equivalence points in this graph. Please identify the two half equivalence…

A: The equivalence point is the inflection point i.e. the point at which lower curve changes into the…

Q: 150ml solution MES buffer (pKa of 6.2) 1.0M concentration and pH of 7.0 Calculate concentration of…

A: pH of MES buffer is obtained from Henderson-HasselBach equation as,

Q: Complete the qualitative test for cations diagram

A: According to the question, We need to fill in the qualitative test table for cation.

Q: A slightly soluble salt has the formula A3B5 and a Ksp of 2.0E-19. What is pB in a solution of this…

A: Answer pB = 2.95 [B] = 11.14*10-4 M   Given Ksp = 2.0*10-19

Q: What is the pH of a solution prepared by mixing 200 ml of 0 6 M acetic acid (K,18-10%) withs 4 mil…

A: Acetic acid is a weak acid and NaOH is a strong base. So, on mixing both keeping NaOH as limiting…

Q: what is the pH of a buffer solution. that containe ol0om HE amd o:120 M Nef 2 The ka of HE is…

A: pH of buffer  using Henderson-Hasselbalch equation    [salt] = 0.120M  [acid] = 0.100 M  pka = -log…

Q: Use 0.50L of the buffer made from 2.5M citric acid and 0.5M sodium citrate to answer the following:…

A: pH is a scale used to specify the acidity or basicity of an aqueous solution. A buffer solution is…

Q: If a strong acid is added in a buffered solution, the hydronium ions react with the conjugate…

A:

Q: What ratio of NaCN to HCN is needed to prepare a pH 10.20 buffer? (Ka of HCN is 4.9 x 10-¹⁰)

A:

Q: A weak acid is added to a solution of strong acid (HCl) of unknown concentration. The concentration…

A:

Q: In graph A, the end point occurs at r pH of 7 volume of 25 mL In graph B, the equivalence point…

A:

Q: 13. Find the K value for each acid and then rank in order of strength (strongest to weakest): A.…

A: Ka of value of an acid is directly proportional to the acidity of that acid. So, high Ka means…

Q: THE X IS SMALL APPROXIMATION The initial concentration and Ka of several weak acid (HA) solutions…

A:

Q: You dissolve 5.3 g of ascorbic acid (MW 176; pk 4.2, pK 11.6) in 150 mL of water. When the solution…

A:

Q: A chemical compound that releases H+ to a solution is abase while that accepts H+ and removes them…

A: Given statement  A chemical compound that releases H+ to a solution is abase while that accepts H+…

Q: The ionization constant, Kp. for hydrazine (base) is 1.51 x 106. What is the pk, of this base?…

A:

Q: The buffer capacity of a solution has been exceeded when the pH of the solution has changed by at…

A: Importance of pHBriefly explain the concept of pH and its relevance in chemistry and…

Q: I need help with part c I don’t know what to do.

A: Step 1:a)After mixing 0.200M acetic acid solution and 0.600M sodium acetate[CH3​COOH] = 0.200M/2…

Q: Consider an acid-base titration in which the base is dispensed from a burette into a flask…

A: The strength of an acid (in a flask) is determined as follows.…

Q: What is pOH of a solution consisting of 1.05 M NH3 and 0.98 M NH4NO3? Ka of NH4 + is 5.8 x 10-10…

A:

Q: A buffer is made up of equal volumes (451.8 mL of each) of 0.812 M A H and 0.885 M A minus. 24.51 mL…

A: Given question is related to the calculation of number of moles of weak acid present in a buffer…