15.62 In a 0.0375 mol•dm-3 formic acid solution at 20 °C, what is (a) the concentration of [H*]? (b) the concentration of [HCOO]? (c) the concentration of [HCOOH]? (Ka(HCOOH)=1.8× 104)

Q: Nitric acid (HNO3) is a strong acid that is completely ionized in aqueous solutions of…

A: Given:Concentration of HNO3 = 7.50 M% dissociation of HNO3 = 33%We need to calculate the Ka of HNO3

Q: Write the acid dissociation constant expression (K.) for the dissociation of HCN.

A:

Q: The pH of an aqueous solution of weak monoprotic acid is 3.15. What is the initial…

A: Value of pH is sued to measure acidity or basicity of a solution. Value of pH lies in the range from…

Q: At equilibrium, the value of [H+] in a 0.260M  solution of an unknown acid is 0.00418M . Determine…

A: For acid HA, the acid dissociation constant Ka can be written as:

Q: | Find the equilbrium expression (Ka) for the ionization reaction. HCO3 (aq) + H20(1) SH30*(aq) +…

A:

Q: the following expressions for K. Write your answer on a separate sheet of paper. 10 (pCO,) (pH,0)²…

A: Equilibrium constant is of three types  A. Equilibrium constant in terms of pressure, Kp. B.…

Q: If the acid dissociation constant, Ka, for an acid HA is 8 x 10-4 at 25°C, what percent of the acid…

A: Given; Acid Dissociation constant (Ka) = 8 x 10-4. Concentration (c) = 0.5 M.

Q: -The pKa of finalic acid is 6.50, What is the pH of an equimolar solution of finalic acid and sodium…

A: Given: Molarity of finalic acid         = 0.1 M Molarity of sodium finalate = 0.1 M pKa of finalic…

Q: In the reaction: H,BO, + H,o = H,BO, + H,0*, which of the following compounds are correctly lists…

A: The question is based on conjugate acid base principle. a strong acid has a weak conjugate base and…

Q: The ionization constant (Kb) of trimethylamine ((CH3);N) is 7.40 x 105. If 5.911 grams of…

A: Given that : The Kb of trimethylamine is 7.40 x 10-5. The mass of trimethylamine used = 5.911 g The…

Q: what do you predict the pH of vinegar tobe?

A: pH = -log[H+]  or  pH = -log[H3O+]

Q: Benzoic acid, HC7H5O2, and its salts are used as food preservatives. Ka for benzoic acid is 6,3 x…

A: When an acid undergoes partial dissociation to form protons and conjugate base while a part of the…

Q: Write the equilibrium-constant expressions and obtain numerical values for each constant in…

A: The equilibrium constant, K determines the relationship between the concentration of products and…

Q: A 0.11 M solution of weak acid, HA, has a pH of 2.07. a. Write the dissociation reaction of the acid…

A: Weak acids are not fully converted to their respective cations and anions in their aqueous…

Q: H¸NH, is a weak base (Kp = 5.0 × 10-4), so the salt CH, NH,NO, acts as a weak acid. What is the pH…

A: pH = -log[H+]  pOH = -log[OH-] pH + pOH = 14

Q: A 0.190 M solution of a weak acid (HA) has a pH of 2.91. Calculate the acid-dissociation constant…

A: Weak acid and its dissociation:

Q: Calculate the H,O" concentration in a solution of acetic acid if the concentration of molecular…

A: If we assume the concentration of H3O+  and CH3COO- ions is x then -   CH3COOH H3O+ CH3COO- I…

Q: If NH4OH at 30.0 °C is 1.20 % ionized is 0.250 M solution, what is its ionization constant and the %…

A: Ionisation constant is also known as equilibrium constant  Which is equal to the ration of…

Q: -69 The acid dissociation constant K, of hypobromous acid (HBrO) is 2.3x 10. Calculate the pH of a…

A: Consider the dissociation of hypobromous acid is as follows:                       HBrO   →     H+…

Q: The ionization constant (Kb) of pyridine (C5H5N) is 5.62 x 10^-4. If 11.3 grams of sample of…

A: Given that -  Ionization constant, Kb for pyridine = 5.62×10-4  Mass of pyridine = 11.3 grams…

Q: 6. What is the pH of 0.03 mol dm- ethanoic acid? Ka = 2 x 10- mol dm-

A:

Q: 7. Which of the following compounds cannot be a Brønsted-Lowry acid? *

A: Bronsted Acid is defined as a species which donates a proton( H+)

Q: The ionization constant, Ka, for benzoic acid is 6.28 x 105. What is the pK, of this acid? a. 1.59 x…

A: Benzoic acid [C6H5COOH] is a monoprotic weak acid, in solution it partially ionizes and gives an…

Q: The acid dissociation constant K, of hypobromous acid (HBrO) is 2.3 x 10?. -6- a Calculate the pH of…

A: Dissociation constant of acid (Ka) - In dissociation reaction of acid, ratio of concentration of…

Q: Given the pKa of hypochlorous acid, HOCl, is 7.54.   What is the pH of a solution which consists of…

A: The solution consist of weak acid HOCl and its conjugate base OCl- that results in the formation of…

Q: Nitrous acid (HNO2) is an essentially nonvolatile acid that ionizes in water with an equilibrium…

A:

Q: 5c. What is the pH of a solution which is 0.0400 M in potassium isocyanate (K* CNO") and 0.0300 M in…

A: Given, [K+CNO-] = 0.0400 M            [HOCN] = 0.0300 M As , K+CNO- is a salt it remains as…

Q: Suppose a 0.20 Maqueous solution of oxalic acid (H₂C₂O4) is prepared. Calculate the equilibrium…

A: Given data : Concentration = 0.20 M PKa1 = 1.25  ka1 = 10-pka1 = 10-1.25 = 5.623×10-2 Pka2 = 3.81…

Q: At equilibrium, the value of [H+] in a 0.260M  solution of an unknown acid is 0.00405M . Determine…

A: Given: Equilibrium concentration of H+ ion = 0.00405 M Initial concentration of acid = 0.260 M

Q: Explain why-(i) Anhydrous calcium chloride is used in desiccators(ii) If bottle full of concentrated…

A: i) Anhydrous calcium chloride CaCl2 is highly hygroscopic in nature it readily absorbs moisture.…

Q: 4) For the following acids, write the reaction for the acid ionizing in water. Write the Ka…

A:

Q: R The following pictures represent aqueous solutions of binary acids of the type HA where the water…

A: According to arrhenius concept : Acids are the species that dissociates to give hydrogen ion (H+) or…

Q: Q- The acid-dissuciation Cons tant Ror chlorus -2 acid. Helor at 25 is 1.0xlo calculate the…

A:

Q: A weak acid (pka = 6.3) is dissolved in solution with a final pH = 5.7. At this pH, some of the acid…

A: Given the pKa of the weak acid(HA), pKa = 6.3  pH of the buffer solution, pH = 5.7

Q: Write the mmechanis m for the reaction Gelow OH 2) H2O

A:

Q: 2. What is the value of k?

A: OH- + C24H30N3+  C23H30N3-OH The general rate law is   [rate] = k [OH-]^x [ C24H30N3+]^y For the…

Q: .11 M solution of weak acid, HA, has a pH of 4.24.  Write the dissociation reaction of the acid in…

A: The weak acid remains in equilibrium with its ions. They dissociate into hydrogen ion and conjugate…

Q: The lodate 103 , Is reduced by sulmte, SO3 according to the following net ionic equation: rate =…

A: We have to find rate change when concentration of proton changes.

Q: 16.62

A: The pH of a given solution can be termed as a measure of its basicity or acidity. It is a measure of…

Q: The product of [H3O*] and [OH-] in water A. is greater than 1 B. decreases with pH C. increases with…

A: The pH is a method that determines the acidity and basicity of a solution. The pH of a solution is…

Q: 4. What is the conjugate acid of the following: (particle made by adding an proton (H*)

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

Q: The acid-dissociation constant, Ka, for gallic acid is 7.71 × 10-10. What is the base-dissociation…

A: Calculate the Kw (water dissociation constant) using the following equation: Kw = [H+] x [OH−]  and…

Q: 7. If the dissociation constant of di chloro acetic acid is Ka = 5 x 103 and its concentration…

A:

Q: Hypobromous acid, HOBr, has an acid dissociation constant of 2.5 × 10–9 at 25°C. What is the pOH of…

A: For a weak acid, we know,[H+] = √(Ka.c)= √ ( 2.5 x 10^-9 x 0.015)= 6.12 x 10^- 6

Q: a. What is the value of k in s?

A: We have to find rate constant, decay rate and time needed to do experiment  Given half life = 16…

Q: Q2:- Calculate the value of the ionization constant, K₁, for aniline if the pK, is 10.5?

A: The base dissociation constant for base is known as Kb.  This is also called as ionization constant.…

Q: Write the chemical equation and the Ka expression for the acid dissociation of each of the following…

A: The expression for equilibrium constant may be written as the ratio of the multiplication of the…

Q: Q2 :- Calculate the value of the ionization constant, K, for aniline if the pK, is 10.5?

A:

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