Some Important Compounds Of Sodium
Chapter Name : The S- Block Elements |
Sub Topic Code : 102_11_10_05_02 |
Topic Name : Some Important Compounds Of Sodium |
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Sub Topic Name : Sodium Chloride |
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Introduction
• A brine solution is electrolyzed using a mercury cathode and a carbon anode. Sodium metal discharged at the cathode combines with mercury to form sodium amalgam. Chlorine gas is evolved at the anode. • Sodium hydroxide is a white, translucent solid. It melts at 591 K. It is readily soluble in water to give a strong alkaline solution. • Crystals of sodium hydroxide are deliquescent • Manufacture of soap, paper, artificial silk and a number of chemicals, (ii) in petroleum refining, (iii) in the purification of bauxite.
Pre-Requisites:
Atom, compound, element,
Activity:
Sodium hydroxide is used to make soap, paper.
Real Life Question:
What is sodium hydroxide used for?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Alkali metals | Group 1 elements. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Sodium hydroxide | It is used for making soap, paper, etc. |
Real life uses :
Caustic soda (sodium hydroxide) is used to make soap, detergent.
Places to visit :
Kitchen.
Practical examples around us
| Examples | Explainations |
|---|---|
| Caustic soda | Caustic soda is the common name of sodium hydroxide. |
What you learn in Theory:
• A brine solution is electrolyzed using a mercury cathode and a carbon anode. • Sodium metal discharged at the cathode combines with mercury to form sodium amalgam. • Chlorine gas is evolved at the anode. • Sodium hydroxide is a white, translucent solid. • It melts at 591 K. • It is readily soluble in water to give a strong alkaline solution. • Crystals of sodium hydroxide are deliquescent • Manufacture of soap, paper, artificial silk and a number of chemicals, (ii) in petroleum refining.
What you learn in Practice:
Sodium hydroxide is used to make soap, paper etc.