Question

Match the following salts with their formulae.

• A. $N{a}_{2}C{O}_3.10H_{2}O$
• B. $CaOC{l}_2$
• C. $CaS{O}_4.½H_{2}O$
• D. $CaS{O}_4.2H_{2}O$

Answer 1

Substance	Chemical name	Chemical formula
Gypsum	Calcium sulphate dihydrate	$CaS{O}_4.2H_{2}O$
Plaster of Paris	Calcium sulphate hemihydrate	$CaS{O}_4.1/2H_{2}O$
Washing soda	Sodium carbonate decahydrate	$N{a}_{2}C{O}_3.10H_{2}O$
Bleaching powder	Calcium oxychloride	$CaOC{l}_2$