Washing Soda

Name a sodium compound which is used for making borax and glass.

Name a metal compound which has detergent properties (cleansing properties).

Name a sodium compound used for softening hard water.

Consider the following substances:                                               $\mathrm{NaCl},\mathrm{Ca}{\left(\mathrm{OH}\right)}_2,{\mathrm{NaHCO}}_3,{\mathrm{NH}}_3,{\mathrm{Na}}_2{\mathrm{CO}}_3,{\mathrm{H}}_2\mathrm{O},{\mathrm{Cl}}_2,{\mathrm{CO}}_2,{\mathrm{CaSO}}_4.2{\mathrm{H}}_2\mathrm{O},2{\mathrm{CaSO}}_4.{\mathrm{H}}_2\mathrm{O},{\mathrm{CaOCl}}_2$                                            Which four substances are utilised in the production of washing soda?

Complete and balance the following chemical equation.

${\mathrm{NaHCO}}_3\stackrel{\mathrm{Heat}}{\to }$

Chemical formula of washing soda is ${\mathrm{Na}}_2{\mathrm{CO}}_3.{\mathrm{xH}}_2\mathrm{O}$. The value of x is _____.

Name the metal whose carbonate is known as washing soda. (Sodium / Calcium / Copper)

Name a metal carbonate which is soluble in water.(Sodium carbonate/Calcium carbonate)

Name a sodium compound which is a constituent of many dry soap powders. (Sodium carbonate decahydrate / Sodium sulphate)

How many molecules of water of crystallisation (per formula unit) are present in washing soda?

The number of molecules of water of crystallisation present in washing soda crystals is:

Give two important uses of washing soda (or sodium carbonate).

What is meant by saying that washing soda has detergent properties?

State whether an aqueous solution of washing soda is acidic or alkaline? Give a reason for your answer.

Describe how washing soda is produced starting from sodium chloride (common salt). Write equations of all the reactions involved.

Write the formula of sodium chloride and sodium carbonate. Explain why an aqueous solution of sodium chloride is neutral, but an aqueous solution of sodium carbonate is basic (or alkaline). Write chemical equations of the reactions involved.

What is washing soda? State two properties and two uses of washing soda.

Write the chemical formula of (i) soda ash and (ii) sodium carbonate decahydrate.