1.

For following decomposition: N_(2)O_(4)(g)rarr2NO_(2)(g) Calculate vapour density of mixture at a time when 20% of N_(2)O_(4) has been dissociated. (Assume initially only N_(2)O_(4) were present)

Answer»

110
92
76.67
38.33

Solution :`N_(2)O_(4)(G)rarr2NO_(2)(g)`
`a_(0)-a_(0)alpha 2a_(0)alpha`
`n_(avg)=(a_(0)xx92)/(a_(0)(1+alpha))=(92)/(1.2)=76.67`
V.D. `=(M_("av"))/(2)=(76.67)/(2)=38.33`


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