`HNO_(3)+P_(4)O_(10) to HPO_(3) + X`
in the above reaction the product `X` is :

H_(3)PO_(4)+2KOHrarrK_(2)HPO_(4)+2H_(2)O Based on the above reaction equivalent weight of H_(2)PO_(4) is

In the reaction, HNO_(3)+P_(4)O_(10) to (X)+(Y) , the products (X) and (Y) are :

In the following reaction, underset("conc." H_(2)SO_(4))overset("conc." HNO_(3))X , the structure of the major product 'X' is -

In the following reaction, underset("conc." H_(2)SO_(4))overset("conc." HNO_(3))X , the structure of the major product 'X' is -

P_(4)O_(10)+4HNO_(3) rarr 4HPO_(3)+2X Then the correct statement regarding X:

N_(2)O_(4), (HPO_(2))_(2), H_(2)CO_(3), SO_(2), SO_(3), P_(4)O_(10) H_(2)SO_(4), N_(2)O_(3), HNO_(3), H_(3)PO_(3) . (a) Among the above compounds, compounds having at least one p pi - p pi bond are x. (b) Among the above compounds, compounds having at least one d pi - p pi bond are y. Given the answer as x + y

HNO_(3) overset(P_(4)O_(10)) underset("Heat") to