HZ is a weak acid. An aqueous solution of HZ is prepared by dissolving 0.020 mol of HZ in sufficient water to yield 1.00L of solution. The pH of the solution was 4.93 at 25 degrees C. What is the Ka of HZ?

Q: Carbonic acid, H,CO, is a diprotic acid with Ka1 = 4.3 × 107 and Ka2 = 5.6 × 1011. What is the pH of…

A: H2CO3 ⇌HCO3−  +   H+.........     ka1= 4.3x10-7 HCO3− ⇌CO3-2 ​+   H+..........    Ka2=5.6x10-11ka1…

Q: 3. Calculate the pH of a 0.600M solution of Na2S

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Q: 1) A 0.45M aqueous solutionof creatine, (C4H9N3O2), has a pH of 1.49. Calculate the value of the…

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Q: Calculate the pH of a 2.44 M HCIO3 solution. Ka for this acid is 1.5x10³. HCIO3 is a weak acid.

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Q: Heavy metal azides, which are salts of hydrazoic acid, HN3, are used as explosive detonators. A…

A: Since hydrazoic acid is a weak acid. Hence the dissociation reaction of hydrazoic acid is HN3…

Q: What is the pH of the solution prepared by allowing 1.55 g of Na2O to react with 500.0 mL of water?…

A: Reaction: Na2O + H2O→ 2NaOH  1mole Na2O reacts with 1 mole H2O to give 2 moles of NaOH

Q: A 0.495M solution of nitrous acid, HNO2, has a pH of 1.83. Calculate the value of Ka for nitrous…

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Q: The pH of a 0.15-M solution of HSO4− is 1.43. Determine Ka for HSO4− from these data.

A: Given, initial concentration of HSO4− = 0.15 M            pH = 1.43 We know that, pH is the negative…

Q: Calculate the pKa of hypochlorous acid. The pH of a 0.015 M  solution of hypochlorous acid has a pH…

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Q: A solution of a weak acid has a concentration of 0.64 M and is found to have a pH of 3.77. What is…

A: The dissociation of a weak acid can be depicted as follows.           HA   +H2O ⇔    A-  +  H3O+I…

Q: Why does the concentration of H3O+ and OH- equal each other in neutral water?

A: pH = -log[H3O+]   [OH-].[H3O+]  = kw  Kw = 1.0 × 10-14 M2

Q: Which one of the following is more acidic and why? ОН OH NO2 NH2

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Q: Nitrous Acid (HNO2) has a Ka value of 5.6x10–4. Calculate the pH of a solution that is 0.00298 M…

A: pH = -log[H+] For a weak acid solution: [H+] = (Ka x C)1/2 Where, C = molarity of acid

Q: Calculate the pKa of the weak acid HA, given that a solution of 0.65 M HA and 0.85 M NaA has a pH of…

A: The formula for calculating pKa of an acid with the given values of pH and concentrations of HA and…

Q: How many moles of nitric acid would you have if you had 0.550 L of a 0.025 M nitric acid solution?…

A: The number of moles of nitric acid (n) is calculated as shown below where M is the concentration of…

Q: 4) Hydrogen peroxide decomposes spontaneously slowly to form water and oxygen gas according to the…

A: The balanced reaction taking place is given as, => 2 H2O2 (l) -----> 2 H2O (l) + O2 (g) Given…

Q: The pH of an aqueous acid solution is 6.15 at 25 ° C. Calculate the Ka for the acid. The initial…

A: The equilibrium constant for acid dissociation is denoted as Ka. It represents the ratio of the…

Q: Calculate the pH of a 3.12×10-3 M  solution of NaF, given that the Ka of HF = 6.80 x 10-4 at 25°C.

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Q: Calculate the pH of a solution containing 0.3 M HCOOH and 0.1 M HCOO (pKa of HCOOH = 3.76)

A: Concentration of HCOOH (Acid) = 0.3 M  Concentration of HCOO- (conjugate base of acid) =  0.1 M  pKa…

Q: When a solution is prepared by dissolving one pellet of KOH weighing 128 mg in 500 ml of dH2O…

A: Mass of KOH = 128 mg1mg = 10-3 gMass of KOH = 0.128 gMolar Mass of KOH = 56.1 g/molMoles of KOH =…

Q: 7.6 In aqueous solution, boric acid behaves as a weak acid (pK, = 9.1) and the following equilibrium…

A: Here we have to differentiate between Lewis acid and Bronsted acid behavior of different acid. The…

Q: Calculate the pH of a 0.0015 M solution of C6H5NH2 (Kb for C6H5NH2= 3.80 x %3D

A: given :- concentration of C6H5NH2 = 0.0015 M  Kb for C6H5NH2 = 3.80 × 10-10  To calculate :-  pH of…

Q: Carbonic acid, H₂CO₃ is a diprotic acid with Ka1 = 4.3 × 10⁻⁷ and Ka2 = 5.6 × 10⁻¹¹. What is the pH…

A: pH of a 0.48 M solution of carbonic acid = 3.35

Q: the pH of an acid solution is 3.59. If the concentration of the acid in the solution is 0.200 mol/L,…

A: Given Concentration of the acid=0.2 mol/LpH of the acid solution=3.59Ka of thel acid=??

Q: What is the hydroxide ion concentration of a solution with pOH =1.5?

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Q: Calculate the acid ionization constant (Ka) if the pH of the 0.1 M acetic acid solution is 2.87?

A: We have given that  Concentration of acetic acid = 0.1M  pH = 2.87

Q: For each group of anions, rank in order of increasing conjugate base strength. Briefly explain.…

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Q: At 28°C and 0.982 atm, gaseous compound HA has density of 1.16 g/L. A quantity of 2.03 g of this…

A: The first step is to determine the number of moles of acid. Given:  P = 0.982 atm V= massdensity =…

Q: substance with a pH of 2 is?

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Q: Trichloroacetic acid (CCl3COOH) is a corrosive acid that is used to precipitate proteins. The pH of…

A: Given information: Concentration of HClO4 solution = 0.040 M Concentration of CCl3COOH solution =…

Q: A solution contains 0.675 g of ethylamine, CH;NH2, per 100 mL of solution. Electrical conductivity…

A: From the given information, Ethylamine reacts with water to produce ethylamine ion and hydroxide ion…

Q: Carbonic acid, H₂CO₃ is a diprotic acid with Ka1 = 4.3 × 10⁻⁷ and Ka2 = 5.6 × 10⁻¹¹. What is the pH…

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Q: If enough of a monoprotic acid is dissolved in water to produce a 0.0122 M solution with a pH of…

A: The dissociation of a monoprotic acid is represented as follows: HA(aq)+H2O(l) ↔ H3O+(aq)+A-(aq)…

Q: Carbonic acid, H₂CO₃ is a diprotic acid with Ka1 = 4.3 × 10⁻⁷ and Ka2 = 5.6 × 10⁻¹¹. What is the pH…

A: The carbonic acid is a diprotic acid. The major release of hydrogen ions occurs in the primary…

Q: At 25°C, the Henry’s law constant for carbon dioxide dissolved in water is 1.8 × 103 atm. Calculate…

A: According to Henry's law,the vapor pressure of the substance dissolved in the solution is directly…

Q: If the pH of a 0.55 M solution of acid is 5.4, what is the KA?

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Q: What is the pH of a 0.190 M  solution of sulfurous acid? Given: Ka1 = 1.70×10–2, Ka2 = 6.20×10–8

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Q: What is [H3O+] of a softdrink that has a pH of 3.400?

A: Given-> pH = 3.400

Q: What is the pH of a solution that contains 0.135 M HCOOH and 0.215 M HCOONa? The pKa of formic acid…

A: pH of the solution is equal to the negative logarithm of hydronium ion while pOH is equal to the…

Q: At 25°C, the Ka of pentafluorobenzoic acid (C6F5COOH) is 0.033. Suppose 0.100 mol of…

A: Given, Ka for C6F5COOH = 0.033 moles of C6F5COOH = 0.100 mol Volume of water = 1.00 L pH = Unknown

Q: Provide your view on the below statement ? Across a row of the periodic table, the acidity of HA…

A: INTRODUCTION: Electronegativity is defined as the tendency to attract the shared pair of electrons…

Q: List and discuss the basicity of the following compounds.

A: Basicity of any molecule depends on the tendency to donate electron pair. More is the tendency of…

Q: Carbonic acid, H₂CO₃ is a diprotic acid with Ka1 = 4.3 × 10⁻⁷ and Ka2 = 5.6 × 10⁻¹¹. What is the pH…

A: Since the Ka1 of H2CO3 is >> Ka2 of H2CO3  Hence we can assume only the first dissociation of…

Q: Write separate equations representing the reaction of HSO3−(a) as an acid with OH−(b) as a base with…

A: HSO3- is amphiprotic. It can act as an acid as well as base.

Q: A 250.0 ml sample of gaseous hydrogen bromide, measured at 22.9°C and 0.930 atm, was dissolved in…

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Q: Calculate the pH and pOH for the following: a. 10mg of cyanic acid (pKa=9.21) in 1L of water

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Q: Formic acid, HCOOH, has Ka= 1.8 x 10–4. Calculate the molar concentration of H3O+ in 0.15 M HCOOH…

A: using given value of ka and concentration  use equaction- H+=cα α=kaC use this boh calculate the…

Q: What effect does element size have on acidity?

A: There is significant effect of element size on acidity. With increasing size of atom acidity…

Q: Calculate

A: Option c is correct answer. pH= 10.11

Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.