Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET2001ChemistryIonic Equilibrium

The p K_a of a weak acid is 4.8 . What should be the ratio of [acid] [salt ] , if a buffer of pH =5.8 is required?

Options

  1. A0.1
  2. B10
  3. C1
  4. D2

Correct answer

A. 0.1

Step-by-step solution

aligned & pH = p K_ a + [ salt ] [ acid ] & 5.8=4.8+ [salt ] [acid] & [salt ] [acid] =5.8-4.8=1.0 & [ salt ] [acid ] = antilog of [1.0]= 10 1 & [ acid ] [ salt ] = 1 10 =0.1 & aligned

Practice Ionic Equilibrium on Quantrex Academy →

More from Ionic Equilibrium

At 30°C the solubility of PbI₂ salt in 0.2 M KI solution will be X, if the solubility product of PbI₂ at 30°C is 2.4 10⁻⁸ . Identify the value of X. 2026A 0.15 mole of pyridinium chloride has been added to 500 cm ^3 of 0.2 M pyridine solution (a base). Assuming there is no change in volume upon mixing(Given: pK_b of pyridine = 8.82 2026At T ( K ) K _ sp of two ionic salts MX ₂ and MX is 5 10⁻¹³ and 1.6 10⁻¹¹ respectively. The ratio of molar solubility of MX ₂ and MX is 2025The conjugate base of phosphorus acid is x . The conjugate base of oleum is y . What are x and y , respectively? 2025The molar solubility of PbI ₂ in 0.2 M Pb ( NO ₃ )₂ solution in terms of K _ sp (solubility product) is 2025When 30 mL of 0.2 M NH ₄ OH is added to 30 mL of 2 M NH ₄ Cl solution. If the pH of the buffer formed is 8.2, what is the pK _ b of NH ₄ OH ? 2025The percentage of ionization of 1 L of x M acetic acid is 4.242 and is called solution "A". The percentage of ionization of 1 L of y M acetic acid is 3 and is called solution "B". 2025At 25^ C , the percentage of ionization of ' x ' M acetic acid is 4.242. What is the value of x ? ( ~K _ a =1.8 10⁻⁵ ) 2025 Full Ionic Equilibrium list All AP EAMCET PYQs