An aqueous solution of `Al_(2)(SO_(4))_(3),FeSO_(4)` and chrome alum is heated with excess `Na_(2)O_(2)`. A brown residue and an yellow filtrate are obtained. Discuss. 

Aqueous solution of Na_(2)CO_(3) is

Al_(2)(SO_(4))_(3)+NH_(4)OH rarr X,X is

Al_(2)(SO_(4))_(3)+NH_(4)OH rarr X,X is

K_(2)SO_(4).Al_(2)(SO_(4))_(3).24H_(2)O is

In a double sulphate salt K_(2)SO_(4)Al_(2)(SO_(4))_(3)4xx xH_(2)O . The value of x is

State as to why (i) An aqueous solution of Na_(2)CO_(3) is alkaline.

An aqueous solution of a white salt A gives a white precipitate B on treatment with dilute HCI in cold conditions. B is soluble in boiling water. An aqueous solution of A gives a yellow precipitate on treatment with a solution of K_(2)CrO_(4) . The soda extract of A is acidified with dilute H_(2)SO_(4) boiled to remove CO_(2) and treated with a freshly prepared solution of FeSO_(4) Concentrated H_(2)SO_(4) is added to the resulting solution (along the walls of the test tube so that the H_(2)SO_(4) forms a separate layer). A brown ring is formed at the junction of the two layers. On treatment with a Kl solution, an aqueous solution of A will give

What is the normality of sulphate ions in 1M Al_(2)(SO_(4))_(3) solution?