Question

10. Which of the following statement
is correct about sodium carbonate?
(a) It is used as a cleansing agent.

(b) It is used to remove permanent
hardness of water.

(c) It is used in the manufacture of
borax.
(d) All of the above​

Answer 1

Answer:

d) All of above.........

Answer 2

Sodium carbonate, Na

Sodium carbonate, Na 2

Sodium carbonate, Na 2

Sodium carbonate, Na 2 CO

Sodium carbonate, Na 2 CO 3

Sodium carbonate, Na 2 CO 3

Sodium carbonate, Na 2 CO 3 is also known as washing soda. It can remove temporary and permanent hardness from water. It is soluble in water and adds a large amount of carbonate ions to the water. These react with dissolved calcium and magnesium ions in the water to produce insoluble precipitates. Sodium carbonate is soluble but calcium carbonate and magnesium carbonate are insoluble.