Teaching Objectives

• To make the student know the importance of liquid state of matter in day to day life.
• To make the student understand that a mixture of two or more substances is called a solution in broad sense. The component present in smaller pro- portion is called a solute and that in larger proportion is called a solvent.
• To make the student know that conventionally a homogeneous mixture of solute and solvent is called a solution.
• To make the student understand that solutions which have water as a solvent are called aqueous solutions and those with solvent other than water are called non-aqueous solutions.
• To make the student know that solutions can be classified on the basis of physical state of solute and solvent. There are seven such types of solutions.
• To make the student know that Arrhenius proposed the theory of electrolytic dissociation in aqueous solution.
• To make the student understand that Arrhenius defined acids as com- pounds liberating hydrogen ions and alkalies as compounds liberating hydroxyl ions in water.

• To make the student understand that base is a compound which reacts with an acid to form salt.
• To make the student know that an acid or a base which dissociates in water to a large extent is called a strong acid or strong base and that which dissociates in water to a small extent is called a weak acid or base.
• To make the student understand that the number of H+ ions in one molecule of an acid is called basicity of that acid and the number of OH− ions in one molecule of a base is called acidity of the base. Strength of Solutions.
• To make the student know that equivalent weight of an acid and base can be found out from their molecular weight and the acidity and basicity of that compound.
• To make the student understand that there are different methods of ex- pressing concentration of a solution such as mass percent, ppm, normality, molarity, molality.
• To make the student know that normality is inversely proportion to the volume of the solution.

Learning Objectives

• The student should know the importance of liquid state of matter in day to day life.
• The student should understand that a mixture of two or more substances is called a solution in broad sense. The component present in smaller pro- portion is called a solute and that in larger proportion is called a solvent.
• The student should know that a homogeneous mixture of solute and sol- vent is conventionally called a solution.
• The student should understand that solutions which have water as a sol- vent are called aqueous solutions and those with solvent other than water are called non–aqueous solutions.
• The student should know that solutions can be classified on the basis of physical state of solute and solvent. There are seven such types of solutions.
• The student should understand that Arrhenius proposed the theory of electrolytic dissociation in aqueous solution.
• The student should understand that Arrhenius defined acids as compounds liberating hydrogen ions and alkalies as compounds liberating hydroxyl ions in water.
• The student should understand that base is a compound which reacts with an acid to form salt.
• The student should know that an acid or a base which dissociates in water to a large extent is called a strong acid and base and that which dissociates in water to a small extent is called a weak acid or a base.
• The student should understand that the number of H+ ions in one molecule of an acid is called basicity of that acid and the number of OH− ions in one molecule of a base is called acidity of the base.
• The student should know that equivalent weight of an acid and base can be found out from their molecular weight and the acidity and basicity of that compound.
• The student should understand that there are different methods of ex- pressing concentration of a solution such as mass percent, ppm, normality, molarity and molality.
• The student should know that normality is inversely proportion to the volume of the solution.

While making lime water, lady of the house adds sugar and salt to a jar full of water. The salt and the sugar disappear in the water. The water tastes sweet and salty. To this mixture the lady adds some lime juice to make lime water and then serves. What has happened to the salt and the sugar?

Both these ingredients have dissolved in water. They do exist, but they are in a solution form.  The sugar and the salts are the SOLUTES and the Water acts as a SOLVENT. The resultant is a SOLUTION