P-block elements -1

Chemistry Level 5

X(g) + Y(g) --------> Z(g) + A(solid)

A ------NaOH-----> Y(g) ------MnSO4 + H2O2-------> Black ppt of MnO(OH)2

Z(g) is used in preparation of Y still it is unreactive at room temperature.

X + H2O ---------> B+ O2

B + C(pottasium salt) --------electrolysis-----> X

X doesn't react with CO

D + X(diluted with N2) ---------> Inter halogen compound

D+ red Phosphorous ------> E ----H2O---> H3PO3 + F(acid)

F+ SO3 -----oxidation----> D

when a phosphorus containing compound G comes in contact with Cl2 and D it explodes

Report your answer as sum of molar mass of X,Y,Z,A,B,C,D,E,F,G to nearest integer

1 solution

Puneet Mangla
Nov 19, 2016

MnSO4 +H2O2 soln is used in the test for ammonia and gives black ppt . so Y - NH3

also N2 and H2 are used in Preparation of NH3 but still at room temperature N2 is unreactive so Z - N2

A is a ammonim salt , now X + NH3 -----> N2 + NH4X where X is either of F2 ,Cl2 ,Br2

only Flourine oxidise water so X - F2 and A- NH4F

C - KF which forms KHF2 ----electrolysis--> F2

D + F2 ---> inter halogen , so D is also a halogen

now we know that PH3 explodes in presence of oxidising agents ie Cl2 or Br2

so G- PH3 D - Br2

so E- PBr3 , F- HBr

now add all mol weights.