Calculate the PH of:                       I. A 0.5 molar solution of an unknown weak acid monoprotic HX, whose Ka = 7.1x10-4.

Q: A solution is prepared at 25 °C that is initially 0.23M in propanoic acid (HC, H,CO,), a weak acid…

A: Given that, a solution is prepared from 0.23 M of propanoic acid and 0.076 M of sodium propanoate.…

Q: 2)[CLO-1] The aqueous solution of H;NCH;CH;NH, CI is going to be- Note that for ethylene diammonium…

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Q: Calculate the pH of a solution containing 0.10 mol/L ammonia, NH,. Kb for ammonia is 1.8x10-.

A: The concentration of ammonia = 0.10 mol/L = 0.10 M (mol/L = M) Kb for ammonia, NH3 = 1.8×10−5

Q: Calculate the pH for a 0.015 M (HC2H3O2) acetic acid solution. The Ka is 1.8 x 10 ^-5 for acetic…

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Q: Calculate the ratio of [CH:COOHJ/NaCH:COO] to give a buffer solution at pH 5. (Ka of acetic acid 1.8…

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Q: 3. What mass of NaA (MW=100 g/mole) must be added to a 100.0 ml of a 0.1 M solution of HA…

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The…

Q: What mass of NaA (MW=100 g/mole) must be added to a 100.0 ml of a 0.1 M solution of HA (Ka=1x10-5)…

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Q: what volume of 0.30 M sodium hydroxide must be added to 25.0 ml of 0.500 M acetic acid to produce a…

A: Given, Molarity of sodium hydroxide, NaOH = 0.30 M = 0.30 mol/L Molarity of acetic acid, CH3COOH =…

Q: What is the pH of the solution when 50.0 mL of 0.10 M KOH and 50.0 mL of 0.12 M HCl are mixed?…

A: Given  HCl      +       KOH   ->    KCl   +   H2O 0.12M         0.10M 50ml            50ml  pH =…

Q: The pH of a solution of 0.63 M pyridine is 9.51, what is the Kb of pyridine? What is the Ka of its…

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Q: 1) Calculate the pH of a solution prepared by dissolving 2.20 g of sodium acetate, CH3COON,, in 99.0…

A: Here, gievn buffer solutionMass of sodium acetate=2.20gMolarity of acetic acid =0.10MVolume of…

Q: what is the pH of a solution that contains 0.75 M acetic acid (Ka= 1.8x10-5 ) and 0.50 Msodium…

A: Given data,Molarity of acetic acid=0.75MMolarity of sodium acetate=0.50MKa=1.8×10-5

Q: Calculate the pH of a mixture containing 0.23 M HONH2 and 0.44 M HONH3Cl. (Kb = 1.1 × 10–8) What…

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Q: 9 (a) Define and write the expression of Kw for the dissociation of water (H₂O). Kw is the of Kw=…

A: 9(a) the dissociatioon of water foloows as: H2O(l) ⇔ H+(aq) + OH-(aq)

Q: The pH of 280 mL of a 0.188 M solution of unknown weak base is 11.76.  What is the Kb of this…

A: Determine the pOH of the weak base.

Q: how do you counstruct a pH curve for a triprotic acid? For example 75.00 mL of 0.137 M H3PO4 with…

A: The acid dissociation constants for phosphoric acid are quite different from each other with pKa's…

Q: What is the pH of a solution of 0.85M HC2H3O2 and 0. 65M NaC2H3O2? The Ka for HC2H3O2 is 1.8 x 10^-5

A: Buffer Solution :- Buffer solution is prepared using weak acid and it's conjugate base of the weak…

Q: What is the pH of a solution that is 0.28 M in acetic acid, HC2H3O2, and 0.69 M in sodium acetate,…

A: Answer:- This question is answered by using the simple concept of calculation of pH of a solution…

Q: 250 mL pure water at 25C is added with 0.105x10-6 L H2SO4 Solution which contains 98.0 wt % sulfuric…

A: given  : Density = mass / volume mass = density × volume             = 1.84 × 250 mL mass = 460 g…

Q: c) What mass of NaC₂H,O,₂ must be dissolved in 0.300 L of 0.25 M HC₂H₂O₂ to produce a solution with…

A: mass of NaC2H3O2 ,sodium acetate = ? Volume of NaC2H3O2 = 0.300 L [HC2H3O2 ] = [CH3COOH] = 0.25 M pH…

Q: Calculate the pH at 25 of a 0.590 M aqueous solution of a weak base with a Kb value of 1.27 x 10-5.

A: Given : Initial concentration of weak base B = 0.590 M Kb of base = 1.27 X 10-5  Since B is a weak…

Q: a) Calculate [H3oʻ], [C2H3O2¯ ] and [HC2H3O2] for a solution prepared by mixing 35.0 mL of o.10 M…

A: The number of moles of acetic acid in 35.0 mL of 0.10 M acetic solution and the number of moles of…

Q: What is the pH of a solution formed by the combination of 50.0 mL of 0.20M NaOH and 25.0 mL of 0.40…

A: Number of moles of HCl and NaOH is calculated as follows,1 mL = 0.001 L

Q: (a) Rearrange the Arrhenius equation k = a(-#) = A so that T is the subject (function) of the…

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Q: A solution is prepared at 25 °C that is initially 0.12M in acetic acid (HCH,CO,), a weak acid with…

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Q: The Ka of a weak monoprotic acid is 1.85 x 10-5. What is the pH of a 0.0761 M solution of this acid?

A: First, we have calculated the concentration of [H+] with the help of Ka and the concentration of the…

Q: What is the pH of a sodium formate solution prepared by adding 0.680 grams of sodium formate to…

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Q: Determine the base ionization constant (in x 10-5) of a 0.0925 g sample of a weak base (molar mass =…

A: Given :- Mass of weak base = 0.0925 g Molar mass of weak base = 17.03 g/mol Volume of water = 100 mL…

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: Calculate the pH of a 0.05 M solution of hydrofluoric acid. The Ka of hydrofluoric acid is 6.6x10^-4

A: Given data, Molarity of HF=0.05MKa of HF=6.6×10-4 pH of a solution is given by -log[H+]

Q: How many liters of 0.54 M monoprotic weak acid HA should be added to 685000L of water (pH = 7.00) to…

A: Equation representing dissociation of HA in water: HA (aq) + H2O (l) →H3O+ (aq) + A- (aq) Let…

Q: Calculate the pH and pOH of a solution resulting from dissolving 0.75 grams of perchloric acid in…

A: Given: Mass of perchloric acid i.e HClO4 = 0.75 g And volume of solution = 1500 mL = 1.500 L…

Q: 0.653 g of a monoprotic acid (mm = 157 g/mol) is dissolved in water to produce 50.0 mL of a solution…

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Q: Calculate the pH of a 1.00L solution which is made up of 0.058 mol acetic acid and 0.030 mol sodium…

A: Given: Moles of acetic acid i.e. CH3COOH = 0.058 mol. Moles of sodium acetate i.e. CH3COONa = 0.030…

Q: If 0.0751 moles of NaOH is added to 1.00 liters of 0.180 M CH3COOH (acetic acid), what will the pH…

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Q: 0.272 g of a monoprotic acid (Mw = 189 g/mol) is dissolved in water to produce 25.0 mL of a solution…

A: Given, Mass of monoprotic acid (HA) = 0.272 g Molar mass of monoprotic acid = 189 g/mol Volume of…

Q: A solution is prepared at 25 °C that is initially 0.34M in acetic acid (HCH,CO,), a weak acid with…

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Q: If a buffer solution is 0.240 M in a weak acid (Ka = 3.8 x 10-5) and 0.530 M in its conjugate base,…

A: Introduction Henderson - Hasselbalch equation gets used to calculate the pH for any buffer solution…

Q: If a buffer solution is 0.260 M in a weak acid (K, = 5.3 × 10-5) and 0.470 M in its conjugate base,…

A: This question is based on the prior knowledge of the Handerson Hasselbach equation which determines…

Q: 3g of benzoic acid (Molecular mass = 122 g/mol) are dissolved in 100 mL of pure water. Calculate the…

A: Ionization of weak monoprotic acid and pH calculation:

Q: A solution is prepared at 25 °C that is initially 0.29M in chloroacetic acid (HCH,CICO,), a weak…

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Q: Calculate the isoionic pH of 6.022 x 1021 molecules of thereonine in 500 mL of solution. (For…

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Q: Calculate the pH of a solution that is 0.155 M in acetic acid and 0.255 M in sodium acetate. The Ka…

A: Mixture of CH3COOH + CH3COONa is an example of acidic buffer  To find its pH, use Henderson's…

Q: A solution is prepared at 25 °C that is initially 0.28M in propanoic acid (HC,H,Co,), a weak acid…

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Q: A solution is prepared at 25 °C that is initially 0.30 M in benzoic acid (HC,H,Co,), a weak acid…

A: Step 1: The given solution is a buffer of weak acid and its conjugate base. So, the Handerson…

Q: A solution is prepared at 25 °C that is initially 0.46M in propanoic acid (HC,H,CO,), a weak acid…

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.