Moderate

The solubility products of MA, MB, MC and MD are 1.8 x 10^-10, 4 x 10^-3, 4 x 10^-5 and 6 x 10^-5, respectively. If a 0.01 M solution of MX is added dropwise to a mixture containing A, B, C and D ions then the one to be precipitated first will be

Correct answer: A. MA

  • A. MA
  • B. MC
  • C. MB
  • D. MD

Explanation

The explanation is: To determine which compound will precipitate first when a 0.01 M solution of MX is added dropwise to a mixture containing A, B, C, and D ions, we need to compare the solubility product constants (Ksp) of the compounds. The compound that will precipitate first is the one with the lowest solubility product constant because a lower Ksp value indicates lower solubility. Given the solubility product constants of the compounds: Ksp(MA) = 1.8 x 10-10 Ksp(MB) = 4 x 10-3 Ksp(MC) = 4 x 10-5 Ksp(MD) = 6 x 10-5 Comparing the values, we can see that the solubility product constant of MA (1.8 x 10^-10) is the lowest among the given compounds. Therefore, when a 0.01 M solution of MX is added dropwise to the mixture, compound MA will precipitate first because it has the lowest solubility product constant.

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About Chemical Equilibrium

Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.

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