The pH of a .10M weak base solution is 10.7 at 25C. What is the deltaG rxn in kJ at 25C?

Q: The pH of a 0.5L HNO2-NO2 buffer solution was determined to be 4.23. The solution was mixed with 5g…

A: Given, pH of buffer solution = 4.23 pKa = 4.35 Volume of buffer solution = 0.5 L weight of HNO2 = 5…

Q: Buffers that are based on 3-morpholinopropanesulfonicacid (MOPS) are often used in RNA analysis. The…

A: The pH range of the buffer solution is 6.5 to 7.9 The pKa value gives us the idea of the acidic…

Q: What is the conjugate acid of CO32-?

A: Bronsted-Lowry acid-base theory: According to the Bronsted-Lowry acid-base theory, acid is a…

Q: What fraction of iminodiacetic acid is in each of its four forms (H, A H,A, HA, A) at pH 3.357? The…

A: pH=3.35=-log [H+]or, [H+]=10-3.35=4.47×10-4

Q: kJ AGrxn

A:

Q: What is the pKb of the conjugate base of a weak acid that has a pKa equal to 5.29 at 25ºC?

A: To get the pKb of the base (B) you MUST subtract the pKa from 14. The reason for this is that the…

Q: A group of students were able to isolate a novel amylase from the saliva of a pig found in Country…

A: Given the desired pH = 7.4  We can find the most suitable buffer based on the Henderson equation.

Q: What is the pK of the weak acid HA if a solution containing 0.1 M HA and 0.2 M A− has a pH of 6.5?

A:

Q: The concentration of the active ingredient in soap is a fatty acid salt NaA. A'=CH3(CH2),CO'. What…

A: The question is based on the concept of salt hydrolysis. we have to determine the pH of the given…

Q: Sen the fllowing informaion, clculate thc standard free coergy of formntion of OH (ag) at 25-C. At…

A: Given information: pH of pure water = 7.00 Standard free energy of formation of H2O (l) = -237.1…

Q: The bacterial load of a ketchup (pH-3.9) can be reduced from 6,000 units to 6 units in 15 minutes at…

A: A d-value is a term used in biology to find or calculate the total time it takes to reduce a…

Q: a. What is the pH of a 0.20 M solution of sodium acetate? The Ka for acetic acid is 1.8 x 10⁻⁵?  b.…

A: We have to calculate the pH of the given solution. a. Given that, the concentration of sodium…

Q: You made a pH 9.0 buffer solution at 25° C by mixing NaOH and histidine (HisH) to give a solution…

A:

Q: A biochemist working with bacteria requires a culture buffered at a pH of 3.6. Which of the…

A: Given that:  pH = 3.6 Buffer solution is mixture of weak acid and its conjugate base . Buffer…

Q: EDTA is a hexaprotic system with the pKa values: FOOC-CH2 H2C-COO pKal = 0.00, pK22 = 1.50, pK23 =…

A: Answer: aY⁴- at pH 3.85 = 1.35 x 10-¹⁴  ay⁴- at pH 10.80 = 2.7 x 10-²²

Q: The Ksp of Fe(OH)3(s) is 3x10-39. What concentration of Fe3+ can exist in solution at pH 3.0?

A: Ksp = [ Fe+3] [ OH- ] 3

Q: Of the two hydroxy organic compounds ROH and R’OH, the first one is basic and other is acidic in…

A:

Q: 120 mg of codeine hydrochloride (CodHCl) is dissolved in 10.0 mL of water.  Calculate the expected…

A: Since you have posted multiple completely unrelated questions, we are entitled to answer the first…

Q: 6. Carbonic acid (H2CO3) has two ionizable protons, with pKa around 6.1 and 10.2. (a) Which species…

A:

Q: What is the ratio of lactic acid (Ka = 1.37x10-4) to lactate in a solution with pH =4.18?

A: Ka = 1.37x10-4 pKa = - log Ka = - log(1.37x10-4) = 3.86

Q: 5. Magnesium hydroxide (Mg(OH)2) has a pKsp value of 11.25. In a solution at pH 10, what is the…

A: Given,  pKsp of Mg(OH)2 = 11.25  pH = 10  What is the maximum Mg2+ concentration in µmol/L = ?  What…

Q: Given that pKb for iodate ion (IO-3) is 13.83, find the quotient [HIO3]/[IO-3] in a solution of…

A: For a weak base, pH can be calculated as: pOH=pKb+logHIO3IO3-

Q: -0.03 N KI if the reaction product F0.25 N K2CO7 in acidic medium. olarity, normality an

A:

Q: "ooc-CH, H,C-coo EDTA is a hexaprotic system with the pK, values: pKa1 = 0.00, pK2 = 1.50, pK3 =…

A:

Q: If 5 mL of 20% w/v aqueous solution of furosemide is diluted to 10mL, what will be its final…

A: Given that: Volume of solution = 5 mL Strength of solution = 20% w/v Volume added = 10 mL Final…

Q: 2. Phoebe was tasked to ensure that an enzyme responsible for keeping her species from extinction…

A: Buffer solution is mixture of weak acid and salt of weak acid or weak base and salt of weak acid. It…

Q: The Kb for dimethylamine, CH3NH2, at 25oC is 4.0×10-4. What’s the Ka of its conjugate acid?

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: How many grams of dipotassium succinate trihydrate (K2C4H4O4-3H2O, MW = 248.32 g/mol) must be added…

A: Given, The pH of the solution is 5.813. The molarity of succinic acid is 0.0338 M.  pKa2 is 5.636.…

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: The hydronium ion concentration in a solution of an unknown weak acid is 5.77 x 1011. What is the…

A: Pka value is depends upon concentration of H+ ions in the solution.

Q: What is the Ph of the buffer solution that contains 1.00 M HC2H302 (acid) and 0.800 M KC2H302 with…

A: Whenever the acid concentration as well as its conjugate base, or the base and its conjugate acid,…

Q: If an Ecell of 0.495V was noted when your cell was set-up. What is the solution pH?

A: pH = Ecell/0.0951

Q: The value of Ksp for Mg3(AsO4)2 is 2.1 x 10-20. TheAsO43 - ion is derived from the weak acid H3AsO4…

A: (a) Mola solubility of Mg3(AsO4)2 in water;  Ksp for Mg3(AsO4)2 =2.1 x 1020. Mg3(AsO4)2    ⇋  3Mg2+…

Q: Acetic acid (CH3COOH, abbrev. HA) is a very common weak acid with pKA = 4.75 (at 25oC and low ionic…

A:

Q: Q.6.Calculate the pH of a 0.36 M CH3COONA solution given the pKa of acetic acid is 4.745.

A: We know that, pH = 7 + (1/2)pKa + (1/2)logC  Given,  pKa of acetic acid = 4.745 Concentration, c =…

Q: Calculate the Ksp of AgBr

A:

Q: Draw the amino acid Asparagine with the biologically-preferred stereochemistry and ionization…

A: We have to draw the amino acid Asparagine with the biologically-preferred stereochemistry and…

Q: Calculate the pH at 25°C of a 0.68 M solution of potassium butanoate (KC3H7CO2). Note that butanoic…

A: Given, that the pKa of butanoic acid = 4.82 We have to calculate the pH of a 0.68 M solution of…

Q: what is the pH of a 50 mg mL-1 solution of ascorbic acid (MW 176.1, pKa 4.17)?

A: Ascorbic acid dissociates in water as: C6H8O6+H2O→C6H7O6-+H+ -------(1)

Q: For a solution in which m is 5.0 x 10-2, calculate Ksp for a. AgSCN b. La(IO3)3 c. PbI2 d. MgNH4PO4

A: Since your question has multiple sub-parts, we will solve only first three subparts for you. If you…

Q: For an acid HA with a pKa of 5.2, what is the ratio of the concentration of the conjugate base to…

A: The dissociation reaction of acid HA can be written as  => HA ------> H+ + A-  Conjugate base…

Q: Calculate the pK, of hypobromous acid from its K, value.

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

Q: For an acid with a pKa of 5.00, what is the pKb of its conjugate base?

A:

Q: The solubility of BaCO3 in water at 25C is 4.0x10^-5 mol/L. Calculate the value of Ksp for BaCO3 at…

A: Given data,  Solubility of BaCO3 in water = 4.0 × 10-5 mol/L

Q: 2.) Phosphorus in urine can be determined by treating with molybdenum(VI) and then reducing the…

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

Q: The pH of a 4.0 × 10-3 mol dm-3 solution of weak base is 10.4. Calculate the Kb of the weak base.

A: A base is a chemical compound which takes a proton. Base which is not dissociated completely in a…

Q: (a) Glycine is present predominantly as the species TV, PH- 4.6 H,N-CH-COOH. (b) Half of the amino…

A: Fully protonated glycine has two dissociable protons, one on its α-carboxyl group (-COOH) and the…

Q: The equivalent conductance of a 0.0140N solution of chloroacetic acid is 109.0 at 250C. What is the…

A: The ionization constant (Ka) of chloroacetic acid has to be given,

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".