A. 3.2 × 10-8 B. 4.2 x 10-3 C. 6.7 x 10-6 D. 5.4 x 10-5

Q: If the Ka of a monoprotic weak acid is 3.1x10-6, what is the pH of a 0.15 M solution of this acid?

A: Ka of monoprotic acid (HA) = 3.1×10-6[HA] = 0.15 M

Q: What weak acid has a pKa of 5.02 and a molar mass of 201.0 g/mol?

A: Pka value is given by the formula  Pka=-logka. When the pka value is low it is more acidic in Nature…

Q: What is the Ka of a weak acid if a 0.100 M solution has a pH of 4.25?

A: Answer:- The pH of the weak acid is 4.25. (Given)We know that, pH=−log[H+]By putting the above value…

Q: An unknown weak acid with a concentration of 0.077 M has a pH of 1.80. What is the Ka of the weak…

A: The Ka of weak acid

Q: What is the pH of a solution of 0.400 M CH₃NH₂ containing 0.310 M CH₃NH₃I? (Kb of CH₃NH₂ is 4.4 ×…

A: pH of buffer solution is calculated by using Henderson Hesselbalch equation

Q: What is the pH of a 0.136 M aqueous solution of potassium fluoride, KF? (Ka for HF = 7.2×10-4)

A: Potassium fluoride on dissolving in water gives strong base potassium Hydroxide and weak acid…

Q: Classify the basicity of calcium hydroxide, Ca(OH)2, based on its reactivity in aqueous solution.…

A:

Q: A 0.037 M solution of a weak acid (HA) has a pH of 4.34. What is the Ka of the acid?

A:

Q: What is the pH of a 0.139 M solution of HF? Ka for Hf is 6.6 x 10-4

A:

Q: What is the pH of a solution of 0.400 M CH₃NH₂ containing 0.250 M CH₃NH₃I? (Kb of CH₃NH₂ is

A: The question is based on the concept of PH calculations. we have to apply henderson equation to…

Q: What is the pH of a solution of 0.400 M CH₃NH₂ containing 0.240 M CH₃NH₃I? (Kb of CH₃NH₂ is 4.4 ×…

A:

Q: Calculate the pH of the following aqueous solution:           0.40 M NH 4Cl (p K b for NH 3 = 4.74)

A:

Q: concentration

A: [H+] = 10^-pH  [H+] = 10^-1.80  [H+] = 0.0158 M

Q: An unknown weak acid with a concentration of 0.063 M has a pH of 1.80. What is the Ka of the weak…

A: Given: An unknown weak acid with a concentration of 0.063 M has a pH of 1.80. We have to calculate…

Q: . What is the pH of a solution that contains 0.35 mol/L of the strons base NaOH?

A:

Q: If the Kb of a weak base is 6.2 × 10-6, what is the pH of a 0.39 M solution of this base?

A: We know that; pH = -log (H+) And, pOH = -log (OH-) And ,pH + pOH =14

Q: An unknown weak acid with a concentration of 0.091 M has a pH of 1.80. What is the Ka of the weak…

A: Weak Acid - These are the acids that dissociate partially in water.  Given:- pH = 1.80 concentration…

Q: An unknown weak acid with a concentration of 0.071 M has a pH of 1.80. What is the Ka of the weak…

A: [acid]=[HA]=0.071MpH=1.80Ka=?

Q: 7. The ka for acetic acid is 1.0 x 10.5. Is acetic acid a weak or a strong acid?

A: Strong acids completely dissociate in aqueous solution (Ka > 1, pKa < 1).

Q: A solution contains 0.020 M CsBrO, what is the pH of the solution? Ka (HBRO) = 2.8x10-9

A: Given the Ka of HBrO = 2.8×10-9 We have to calculate the pH of a solution that contains 0.020 M…

Q: An unknown weak acid with a concentration of 0.085 M has a pH of 1.80. What is the Ka of the weak…

A:

Q: pH of a 8.82 x 10M solution of Ba(OH)2?

A:

Q: 6- Determine the pH for the fol a) 1.0x 10* M HNO3 b) 1.0x 10² M KOH

A: pH is a universal indicator which measure how acidic/basic solution is. The range goes from 0 to 14,…

Q: What is the Ka of a weak acid whose 0.10 M solution produces a pH of 2.38?

A:

Q: A 0.068 M solution of an unknown weak acid has a pH = 1.86. What is the Ka of the acid?

A:

Q: An unknown weak acid with a concentration of 0.057 M has a pH of 1.80. What is the Ka of the weak…

A: Given that: pH = 1.80 Concentration = 0.057 M Ka = ?

Q: If the ph of a 30.0 mL sample of 1.0 M HOAc is 2.40 what's the equilibrium [H+] and the Ka value?

A: HOAc is a weak acid also known as acetic acid. The pH of a solution is related to the concentration…

Q: )A solution made by dissolving 7.40 g of potassium hypochlorite (KClO) into 1.50 L of solution.…

A:

Q: weak base is 2.5 × 10-6, what is the pH of a 0.23 M solution of this base?

A: From the relation, pOH is calculated as,

Q: If the Kh of a weak base is 5.8 x 10-6, what is the pH of a 0.29 M solution of this base? pH =

A:

Q: 0.021 M solution of a weak acid (HA) has a pH of 4.19. What is the Ka of the acid?

A: Ka is acid dissociation constants of weak acid.  Weak acid dissociated feabily in aqueous solution

Q: If the Ka of a reaction is equal to 1.8x10-5, which is favored- the products or the reactants? How…

A: If Ka of reaction is 1.8 x 10-5 then reaction is reactant favoured because value of equilibrium…

Q: If the Ka of a monoprotic weak acid is 1.4×10−6, what is the pH of a 0.14 M solution of this acid?

A: Given information: Concentration of an acid = 0.14 M Ka of weak acid = 1.4×10-6

Q: What is the Ka of hydrazoic acid if a 0.020 M hydrazoic acid aqueous solution has a pH of 3.22?

A:

Q: What is the pH of a solution of 0.400 M CH₃NH₂ containing 0.300 M CH₃NH₃I? (Kb of CH₃NH₂ is 4.4 ×…

A:

Q: If the Ka of a monoprotic weak acid is 1.3 x 10-6, what is the pH of a 0.18 M solution of this acid?…

A: