Equilibrium questions
1777 published questions with worked solutions.
- The concentration of hydroxyl ion in a solution left after mixing 100 mL of 0.1 M MgCl₂ and 100 mL of 0.2 M NaOH [Ksp of...
- A physician wishes to prepare a buffer solution at pH=3.58 that efficiently resists a change in pH yet contains only small...
- Weak electrolytes are only partly dissociated in solutions. The extent to which they are dissociated in a given solution is known...
- The aqueous solution of a salt is alkaline. This shows that salt is made from:
- What volume of 1.0 M sodium formate solution should be added to 50 mL of 0.5 M formic acid to produce a buffer solution of pH=4.0...
- Which species acts as an acid and also as a conjugate base of another acid?
- A buffer mixture of acetic acid and potassium acetate has pH=5.24. The ratio [CH₃COO⁻]/[CH₃COOH] in this buffer is (pKa=4.74):
- The pKa for acid A is greater than pKa for acid B. The strong acid is:
- Equal volumes of three acid solutions of pH 3, 4 and 5 are mixed in a vessel. What will be the H⁺ ion concentration in the...
- How many mole of HCl are required to prepare one litre of buffer solution (containing NaCN+HCl) of pH 8.5 using 0.01 g formula...
- A buffer solution is prepared by mixing 10 mL of 1.0 M acetic acid and 20 mL of 0.5 M sodium acetate and then diluted to 100 mL...
- 10⁻⁶ M HCl is diluted 100 times. Its pH is:
- The equilibrium constant for the reaction, HONO+CN⁻→HCN+ONO⁻ is 1×10⁻¹⁴. The magnitude of the equilibrium constant suggests that:
- The pH of 0.1 N HCl solution is:
- A buffer solution of CH₃COOH and CH₃COONa is used:
- A 50.0 mL solution of 0.1 M acetic acid is titrated against a 0.1 M sodium hydroxide. The best indicator will be:
- The composition of an acidic buffer mixture made up of HA and NaA of total molarity 0.29 having pH=4.4 and Ka=1.8×10⁻⁵ in terms...
- An aqueous solution of ammonium acetate is:
- Which solution will have pH closer to 1.0?
- The pH of a 0.01 M solution of acetic acid having degree of dissociation 12.5% is:
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