Question:

Which of the following salt has the same value of vant?s Hoff factor as that of $K _{3}\left[ Fe ( CN )_{6}\right]$ ?

Updated On: Jun 23, 2023
  • $Na _{2} SO _{4}$
  • $Al \left( NO _{3}\right)_{3}$
  • $Al _{2}\left( SO _{4}\right)_{3}$
  • $Fe _{3} O _{4}$
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The Correct Option is B

Solution and Explanation

$K _{3}\left[( FeCN )_{6}\right]$ on ionisation gives 4 species $\left(3 K ^{+}\right.$ and $\left.1\left[ Fe ( CN )_{6}\right]^{3-}\right)$ and $Al \left( NO _{3}\right)_{3}$ also gives 4 species $\left(1 Al ^{3+}\right.$ and $\left.3 NO _{3}^{-}\right)$, thus both will have same value of Van't Hoff factor.
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Concepts Used:

Solutions

A solution is a homogeneous mixture of two or more components in which the particle size is smaller than 1 nm.

For example, salt and sugar is a good illustration of a solution. A solution can be categorized into several components.

Types of Solutions:

The solutions can be classified into three types:

  • Solid Solutions - In these solutions, the solvent is in a Solid-state.
  • Liquid Solutions- In these solutions, the solvent is in a Liquid state.
  • Gaseous Solutions - In these solutions, the solvent is in a Gaseous state.

On the basis of the amount of solute dissolved in a solvent, solutions are divided into the following types:

  1. Unsaturated Solution- A solution in which more solute can be dissolved without raising the temperature of the solution is known as an unsaturated solution.
  2. Saturated Solution- A solution in which no solute can be dissolved after reaching a certain amount of temperature is known as an unsaturated saturated solution.
  3. Supersaturated Solution- A solution that contains more solute than the maximum amount at a certain temperature is known as a supersaturated solution.