How would you distinguish between baking powder and washing soda by heating?

Question

Answer

::-- Baking powder is used to make food items but ,, washing soda is use to clean the cloth.!

Answer

Baking power is used to make pakoras or used to make other items... where as Washing Soda is used to clean the cloths..

Answer

Introduction:
Baking powder and washing soda are two different chemical compounds commonly used in various household applications. While both substances can release carbon dioxide gas when heated, they have distinct properties and compositions. By observing their behavior during heating, we can distinguish between baking powder and washing soda.

Heating Baking Powder:
When baking powder is heated, it undergoes a chemical reaction known as thermal decomposition. This process occurs in two stages:

1. Low-temperature Reaction:
At lower temperatures, typically around 50-70°C (122-158°F), baking powder releases carbon dioxide gas. This initial release of gas causes the baking powder to appear to 'puff up' slightly. However, the reaction is not very vigorous, and the powder does not undergo significant changes in appearance or texture.

2. High-temperature Reaction:
As the temperature increases further, usually above 100°C (212°F), baking powder undergoes a second reaction. This reaction involves the breakdown of sodium bicarbonate (the main component of baking powder) into sodium carbonate, carbon dioxide, and water. The release of carbon dioxide gas becomes more pronounced during this stage, and the powder may start to foam and emit a characteristic odor.

Heating Washing Soda:
Washing soda, also known as sodium carbonate, behaves differently when heated compared to baking powder. It undergoes a process called dehydration, where it loses water molecules. The dehydration of washing soda occurs as follows:

1. Water Evaporation:
As the temperature rises, washing soda initially loses its water molecules, which evaporate away. This process is visible as the powder becomes damp and starts to release steam.

2. Formation of Anhydrous Sodium Carbonate:
At higher temperatures, typically above 200°C (392°F), washing soda completes its dehydration process. It transforms into anhydrous sodium carbonate, a white, crystalline compound. This transformation is accompanied by a loss of volume and the absence of steam or gas release.

Distinguishing Factors:
To distinguish between baking powder and washing soda by heating, consider the following factors:

1. Gas Release:
Baking powder produces more noticeable gas release and foaming at higher temperatures, while washing soda does not exhibit significant gas release.

2. Odor:
Baking powder may emit a characteristic odor during heating, which is absent in the case of washing soda.

3. Appearance Changes:
Baking powder may undergo slight puffing and texture changes during heating, while washing soda remains relatively unchanged, except for water evaporation.

By carefully observing the behavior of the substance during heating, considering the gas release, odor, and appearance changes, one can differentiate between baking powder and washing soda.

Answer

When baking soda(NaHCO3)is heated it for Na2CO3 and some other products
Whereas
When washing soda(Na2CO3.10H2O) is heated it loses 1 molecule of water and becomes(Na2CO3.9H2O).

HOPE HELP U.

Top Courses for Class 10View all

Science Class 10

Social Studies (SST) Class 10

Mathematics (Maths) Class 10

English Grammar Advanced

English Grammar Basic

Top Courses for Class 10

Top Courses for Class 10

Suggested Free Tests

Related Content

About Class 10

Class 10 Study Material

Class 10 All Subjects

NCERT Textbook Solutions

Other Classes

Important Links

Company