You have been observing an insect that defends itself from enemies by secreting a caustic liquid. Analysis of the liquid shows it to have a total concentration of formate plus formic acid (Ka = 1.8 × 10 –4 ) of 1.45 M; the concentration of formate ion is 0.015 M. What is the pH of the secretion?

Q: Phenylacetic acid (C6H5CH2COOH, simplified here as HPAc) builds up in the blood of persons with…

A: Answer: Given data: pH=2.62α=0.02C=0.12M

Q: The pH of a 0.50 M solution of an acid, HA, is 4.67. Calculate Ka of HA.

A:

Q: Acids, Bases, Hydrolysis, Buffers, Titrations 1. Calculate the pH and percent ionization for 0.50 M…

A:

Q: 8) A 0.185 M solution of a weak acid has a pH of 2.95. Calculate the acid ionization constant (Ka)…

A: A 0.185 M solution of a weak acid (HA) has a pH of 2.95. Calculate the acid ionization constant Ka…

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: An organic acid (HA) has a molecular weight of 100g/mol, a Kow = 5.6 and a K, = 2.7 x 10-2. If…

A:

Q: Phenylacetic acid (C6H5CH2COOH, simplified here to HPAc) builds up in the blood of persons with…

A: Given data: The pH of Phenylacetic acid = 2.62. The concentration of C6H5CH2COOH [C6H5CH2COOH] =…

Q: When 0.075 mol of propionic acid, C2H5CO2H, is dissolved in 400 mL of water, the equilibrium…

A: The concentration of propionic acid and the ions has to be calculated in order to obtain the Ka.

Q: The active ingredient in aspirin is acetylsalicylic acid (HC9H7O4), a monoprotic acid with a Ka of…

A:

Q: In the laboratory, a general chemistry student measured the pH of a 0.458 M aqueous solution of…

A: A numerical problem based on pH calculation, which is to be accomplished.

Q: What is the pH of a 0.220 M solution of sodium cyanide (NaCN)? Ka for HCN is 4.9 x 10-9.

A: NaCN has one less hydrogen and corresponds to a conjugate base (a weak base). The credentials…

Q: Determine the pH of a 0.650 M solution of magnesium nitrite, Mg(NO2)2 at 25 °C. A solution…

A: Answer: Hydrolysis of the salt of weak acid and strong base or strong acid and weak base takes place…

Q: C6H4NH2COOH, para-aminobenzoic acid (PABA), is used in some sunscreen agents. Calculate the…

A: Para-aminobenzoic acid (PABA), C6H4NH2COOH dissociates as,                              C6H4NH2COOH…

Q: In the laboratory, a general chemistry student measured the pH of a 0.461 M aqueous solution of…

A: The acid dissociation constant Ka is the equilibrium constant, which indicates the acidic strength…

Q: The pH of a 0.45 M solution of a weak acid, HA, is 2.13. What is the value of Ka for the weak acid?

A: Given data,pH=2.13Molarity of HA=0.45

Q: In the laboratory, a general chemistry student measured the pH of a 0.578 M aqueous solution of…

A: For a weak acid, we have       pH = 1/2(pKa - logA) where A is the concentration of the acid. Given,…

Q: you mix 100. mL of 0.11 M HCl with 50.0 mL of 0.22 M NH3, what is the pH of the resulting solution?…

A: Volume of HCl=100.0mL Concentration of HCl=0.11M Volume of NH3=50.0mL Concentration of NH3=0.22M For…

Q: 6.5 g of sodium acetate was dissolved in 100 mL of water to give a final volume of 106 mL. If the Ka…

A: Sodium acetate dissociates in water into sodium and acetate ions. Sodium ions react very little with…

Q: A general chemistry student measured the pH of a 0.12 M aqueous solution of an unknown weak acid HA…

A: The question is based on the concept of equilibrium. we have to calculate PKa of a weak acid whose…

Q: Acid rain is due to the dissolution of sulfur oxide (SO3) present in contaminated areas in the…

A: The reactions taking place are-

Q: If the Ka of a monoprotic weak acid is 3.7×10−6, what is the pH of a 0.39 M solution of this acid?

A:

Q: What is the pH of a 0.17 M weak acid solution? The KA of the weak acid is 2.1 x 10-5.

A: Given :-  Initial concentration of weak acid = 0.17 M  Ka for acid = 2.1 × 10-5  To be calculated :-…

Q: For a solution of an aqueous hypochlorous acid solution, the Ka is 5.0 x 10-8 and [HOCI] is 0.050M.…

A:

Q: Consider the dissociation of hydrocyanic acid in aqueous solution HCN - CN + H* for which K, is 4.9…

A:

Q: 16. The Ka of Hydrocyanic acid is 4.9 X 10-10 Consider a 0.050 M solution of its salt potassium…

A: To Find: To find the pH value of the salt solution.

Q: Vitamin C is ascorbic acid (HC6H7O6) for which the equilibrium constant is Ka = 8.0 · 10. Calculate…

A: Given:  The Ka of HC6H7O6 = 8.0×10-5 We have to calculate the pH of a solution made by dissolving a…

Q: C6H4NH2COOH, para-aminobenzoic acid (PABA), is used in some sunscreen agents. Calculate the…

A: Consider the given information is as follows; Concentration of C6H4NH2COOH = 8.0×10-2 MKa =…

Q: what is the pH of a solution prepared by adding 63.6 mL of 0.100 M sodium hydroxide to 69.37 mL of…

A: Given that : The volume of sodium hydroxide = 63.6 mL The molarity of sodium hydroxide = 0.100 M The…

Q: In the laboratory, a general chemistry student measured the pH of a 0.578 M aqueous solution of…

A:

Q: In the laboratory, a general chemistry student measured the pH of a 0.544M aqueous solution of…

A: Given :-  Initial concentration of aqueous solution of acetic acid = 0.544 M  pH of solution = 2.488…

Q: In the laboratory, a general chemistry student measured the pH of a 0.352 M aqueous solution of…

A: Acetyl salicylic acid is a weak acid. The concentration of [H+] in a solution of weak acid is given…

Q: A 0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 7.2 x 10-4 M. What…

A: Assuming the weak acid is HA Hence the ionization reaction is  HA (aq) + H2O (l) ----> H3O+ (aq)…

Q: Milk of magnesia is a suspension of magnesium hydroxide in water. Although Mg(OH)2 is relatively…

A:

Q: In distilled water @ 35 degrees C, transition metal hydroxides undergo the following equilibrium…

A:

Q: 20 ml of 0.2 M NaOH solution be treated with 40 ml of 0.2 M acetic acid solution to give 60 ml.…

A: An acidic buffer is defined as an aqueous solution that consists of a mixture of a weak acid and its…

Q: (Q25) A buffer solution is prepared by adding 0.780 moles of formic acid and 0.760 moles of sodium…

A: Buffer solution: A buffer solutions is an aqueous solution consisting of a mixture of a weak acid…

Q: What is the pH of a solution prepared by combining 0.258 mol of a newly discovered weak acid (Ka =…

A: Given system is buffer mixture

Q: An organic acid (HA) has a molecular weight of 100. g mol 1, a Kow = 5.6 and a K, = 2.7 x 10-2. If…

A: When an organic acid is dissolved in octanol, no dissociation takes place as octanol is a non-polar…

Q: If a 0.59 M solution of a monoprotic acid HA has a pH of 4.57, what is the Ka value of the acid HA?

A: Concentration of Acid HA = 0.59 M pH = 4.57     ICE Table:…

Q: When 0.040 mol of propionic acid, C2H5CO2H, is dissolved in 700 mL of water, the equilibrium…

A: Molarity is solution expressed as the number of moles of solute per litre of solution. Equilibrium…

Q: The pH of a 0.55 M aqueous solution of hypobromous acid, HBrO, at 25oC is 4.48. What is the value of…

A: The concentration of HBrO solution = 0.55 M. pH of aqueous HBrO solution = 4.48.

Q: A 0.100 M solution of an acid, HA, has a pH = 1.52. What is the KA value for this acid?

A: Calculate the concentration of hydronium ion:

Q: 5 g of cyanoacetic acid, CH2CNCOOH in a liter of aqueous solution has a pH of 1.89. what is the…

A: SOLUTION Acid Dissociation Constant  It is an equilibrium constant of a weak acid which…

Q: Lemons get their sour flavor from citric acid (Ka = 7.4 x 10-4) a fresh squeezed lemon can have a…

A: Concentration of citric acid = 0.3 M  Volumeof citric acid = 20 ml  Concentration of KOH = 0.6 M…

Q: 7. This weak monoprotic acid, HZ, can be found in many berries. Calculate the Ka of this acid if the…

A: Ka is the dissociation constant of the acid. An acid dissociate in water and the dissociation…

Q: 1. The lonization constant (Ks) of pyridine (CsHsN) is 5.62 x 10-. If 11.3 grams of sample of…

A:

Q: A 0.150 M solution of a weak acid has a pH of 2.75. What is the Ka value of this acid?

A: Given that, The concentration of a weak acid is C = 0.150 M. The pH of that 0.150 M solution of warm…

Q: A chemist wishes to prepare a standard aqueous solution that has a concentration of Fe3+ equal to…

A: Please have a look into the solution:

Q: In the laboratory, a general chemistry student measured the pH of a 0.522 M aqueous solution of…

A: Ka(experiment) = 5.9 × 10-5

Q: Hypobromous acid, HBrO, can be produced commercially as a disinfectant. A solution is made by…

A: HBrO is a weak acid.  pH = -log[H+] For a weak acid solution: [H+] = (Ka x C)1/2 Where, C = molar…