Question:

A certain aqueous solution of FeCl3FeCl _{3} [formula mass =162]=162] has a density of 1.1g/mL1.1 g / mL and contains 20.0%FeCl3.20.0 \% FeCl _{3} . Molar concentration of this solution is

Updated On: Apr 1, 2024
  • 0.028
  • 0.163
  • 1.357
  • 1.47
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The Correct Option is C

Solution and Explanation

20% FeCl solution means 100 g of solution contains 20 g FeCl . \Rightarrow Volume of 100 g solution =100g1.1g/mL=\frac{100\,g}{1.1\,g/mL} =90.91mL=90.91 \,mL Moles of 20 g FeCl3=20162=0.1234_{3}=\frac{20}{162}=0.1234 mole \Rightarrow Molar concentration of solution =0.123490.91×1000=\frac{0.1234}{90.91}\times1000 =1.357=1.357 M
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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.