The oxidation states of iron atoms in compounds (A) ,(B) and (C) , respectively , are x , y and z . The sum of x , y and z is _______
`Na_(4)[Fe underset((A))((CN)_(5)) (NOS)] " " Na_(4) underset((B))([FeO_(4)]) " " [Fe_(2) underset((C))((CO)_(9))]`

Oxidation number of Fe in violet coloured complex Na_(4)[Fe(CN)_(5)(NOS)] is :

Let the oxidation state of the transition element of compound K_2Cr_2O_7,KMnO_4 and K_2FeO_4 be X,Y, and Z respectively, calculate X+Y+Z .

In the Lassaigne’s test for nitrogen in an organic compound, the Prussian blue colour is obtained due to the formation of: (a) Na_(4)[Fe(CN)_(6)] (b) Fe_(4)[Fe(CN)_(6)]_(3) (c) Fe_(2)[Fe(CN)_(6)] (d) Fe_(3)[Fe(CN)_(6)]_(4)

Fe shows an oxidation state of +1 in : a) FeCl3 b) [ Fe (H2O)6] 2+ c) Fe(CO)5 d) [ Fe (H2O )5NO + ] SO4

In a compound The number of sigma and pi bonds respectively are : overset(NC)overset(|)underset(NC)underset(|)(C)=overset(M(CO)_(3))overset(|)underset(C_(2)H_(5))underset(|)(C)

In a compound The number of sigma and pi bonds respectively are : overset(NC)overset(|)underset(NC)underset(|)(C)=overset(M(CO)_(3))overset(|)underset(C_(2)H_(5))underset(|)(C)

In the following sequence of recation, identify the compounds (A), (B), (C ) and (D): underset("Solution")Na_(2)CO_(3)overset(SO_(2))rarr (A) overset(Na_(2)CO_(3))rarr (B) overset(S)underset("Heat")rarr (C ) overset(AgNO_(3))rarr (D)

CH_3-CH_2-underset((X))(CH_2)-C-=N,CH_3-underset((Y))underset(CN)underset(|)(CH)-CH_3 Relation between (X) and (Y) is

The enthalpy of combustion of propance (C_(3)H_(8)) gas in temes of given of geven data is , Bond energy (kJ/mol) underset(+x_(1))(.^(epsi)C-H)underset(+x_(2))(.^(epsi)O-O)underset(+x_(3))(.^(epsi)C-O)underset(+x_(4))(.^(epsi)O-H)underset(+x_(5))(.^(epsi)C-C) [Resonance energy of CO_(2) is -z KJ/mol and DeltaH_("vaporization")[H_(2)O(l)" is y " KJ//mol]

The equivalent weight of compounds (a) Na_(2)SO_(4)" "(b) Na_(3)PO_(4).12H_(2)O" "(c ) Ca_(3)(PO_(4))_(2) resepctively are x,y and z. The correct set of molecular weight will be :-