Which reaction cannot be used for the preparation of the halogen acid (A) 2KBr+ Conc. `H_(2)SO_(4)` `rarr` (B) NaCl+ Conc. `H_(2)SO_(4)``rarr` (C) `NaHSO_(4)`+NaCl `rarr` (D) `CaF_(2)`+`H_(2)SO_(4)` `rarr`

Conc. H_(2)SO_(4) is not

overset("Conc". H_(2)SO_(4))rarr(A)

overset(Conc.H_(2)SO_(4))rarr Major product is

complete the following equation : (i) c+conc. H_(2)SO_(4)rarr (ii) XeF_(2)+H_(2)Orarr

Identify the product of the given reaction: AgBr + 2Na_(2)S_(2) O_(3) rarr " " H_(2)SO_(4) ("dil") + Na_(2)S_(2)O_(3) rarr " " H_(2)SO_(4) ("conc.") + Na_(2)S_(2)O_(3)

The number of reactions that gives SO_(2) gas : (a) Cu+"conc. "H_(2)SO_(4)rarr (b) Zn +"dil. "H_(2)SO_(4)rarr (c ) S+H_(2)SO_(4)rarrr (d) FeS_(2)+O_(2)rarr (e ) NaHSO_(3)+"dil. "H_(2)SO_(4)rarr (f) H_(2)SO_(4)+PCl_(5)rarr

Complete the following reactions and explain the formation of the products. (a) HCOOH overset (Conc. H_2 SO_4) rarr CH_3 COOH overset (Conc. H_2 SO_4) rarr ( c) (d) Glacial acetic acid (CH_3 COOH) overset (973 K)rarr ( e) .

The reason why conc. H_2SO_4 is used extensively to prepare other acids is that conc. H_2SO_4 is

Why is it necessary to test for the acid radicals first with dil. H_(2)SO_(4) and then with conc. H_(2)SO_(4) ?