This activity1.4 shows the reaction between calcium oxide and water
Aim of the activity
To observe and demonstrate the chemical reaction between calcium oxide with water.
Materials used in the activity
- Calcium oxide (Quick lime)
- Water
- Beaker
Procedure
We will a beaker and add a small amount of calcium oxide or quick lime in it and pour water slowly.
Observation
When we add water to calcium oxide, a vigorous reaction takes place. We can feel heat touching the beaker and hear hissing sound. We can also see bubbles in the procedure.
When the solution cools down, we can see a white precipitate that is calcium hydroxide or slaked lime.
Chemical reaction involved in the activity
CaO(s) + H2O(I) → Ca(OH)2(aq)
Conclusion
The activity demonstrates the vigorous reaction between calcium oxide and water. This is an exothermic reaction.
As CaO combine with water to form CaOH)2 only so this is a combination reaction.
Frequently Asked Question
- What types of reaction takes place in this activity 1.5?
Ans – The reaction is combination reaction and exothermic reaction.
- What is the common name of calcium oxide?
Ans – Quick lime
- What is the common name of calcium hydroxide?
Ans – Slaked lime
- What it the use of slaked lime in daily life?
Ans – In white washing on walls
Related Topics
|
Topics |
| Activity 1.1 |
| Activity 1.2 |
| Activity 1.3 |
| Activity 1.4 |
| Activity 1.5 |
| Activity 1.6 |
| Activity 1.7 |
| Activity 1.8 |
| Activity 1.9 |
| Activity 1.10 |
| Activity 1.11 |