Solutions of Solids in Liquids

Overview

In solutions of solids in liquids, when a solid comes into contact with a suitable liquid, it dissolves to form a homogeneous mixture known as a solution. This process of dissolution is driven by the attraction between the particles of the solute and the solvent. The regular arrangement of molecules or ions in solids leads to strong inter-molecular or inter-ionic forces, which are overcome by the solute-solvent forces during dissolution.

Questions and Answers

1. What is the process of dissolution when a solid comes in contact with a suitable liquid?

   When a solid comes in contact with a suitable liquid, it dissolves forming a solution, which is a homogeneous mixture.

2. How can the process of dissolution be explained in terms of the particles of solute and solvent?

   The process of dissolution can be explained by the attraction between the particles of the solute and the solvent.

3. What is the characteristic arrangement of molecules or ions in solids that affects the dissolution process?

   The molecules or ions in solids are arranged in a regular pattern where the inter-molecular or inter-ionic forces are at a maximum.

4. What are some common examples of solutions of solids in liquids?

   Examples include sugar in water, jellies, and paints; dust particles in smoke; and metal alloys like pearls and opals.

5. How is a solution defined when a solid is put in a liquid solvent?

   A solution is defined as a homogeneous mixture of a solid and a liquid solvent when the solid dissolves in the liquid.

Multiple-Choice Questions

1. What is the process when a solid dissolves in a liquid to form a homogeneous mixture?

   a) Precipitation
   b) Sublimation
   c) Dissolution
   d) Evaporation
   Answer: c) Dissolution

2. Which of the following is an example of a solid solute in a liquid solvent?

   a) Mist in air
   b) Sugar in water
   c) Alcohol in milk
   d) Dust particles in smoke
   Answer: b) Sugar in water

3. How are the particles arranged in solids in terms of inter-molecular forces?

   a) Randomly
   b) Loosely
   c) In a regular pattern
   d) Close together
   Answer: c) In a regular pattern

4. What type of mixture is formed when a solid comes in contact with a suitable liquid?

   a) Heterogeneous mixture
   b) Homogeneous mixture
   c) Suspension
   d) Colloid
   Answer: b) Homogeneous mixture

5. Which state of matter can act as both solute and solvent in a solution?

   a) Solid
   b) Liquid
   c) Gas
   d) Plasma
   Answer: c) Gas