formula of nessler's reagnet is `K_(2)Hgl_(4)`.

Write the cathode and anode reaction for the electrolysis solution of K_(2)SO_(4) .

Formula of Haematite is Fe_(3)O_(4)

Name the compound that evolves as vapours when NaCl is heated with K_(2)Cr_(2)O_(7) and conc. H_(2)SO_(4) . Also mention its colour and chemical formula.

At 318K and 2 atm total pressure the degree of dissociation (alpha) is 28% at the equilibrium condition for the reaction N_(2)O_(4)(g)hArr 2NO_(2)(g) . Calculate K_(p) & K_(c) .

Write the structural formula of a compound of molecular formula C_(4)H_(8)Cl_(2) in which (a) all the carbon atoms are involved in -CH_(2) groups (b) none of the carbon atoms is involved in -CH_(2) group.

Without using distance formula, show that points (-2, -1) , (4, 0) , (3, 3) " and " (-3, 2) are the vertices of a parallelogram.

Balance by ion -electron method : K_(3)Cr_(2)O_(7)+H_(2)SO_(4)+KItoCr_(2)(SO_(4))_(3)+I_(2)+H_(2)O+K_(2)SO_(4)

If the oxidation number of Cr in CrO_(5),K_(2)CrO_(4),K_(2)Cr_(2)O_(7) and [Cr(NH_(3))_(4)Cl_(2)]Cl are +a.+b, +c and +d respectively then