IIT JEE , AIEEE Forum - Chemistry , Physical Chemistry

rik_mad

Hi arny

N204 dissociates into 2 moles of NO2

_{first of all v.d is always half of the molar mass of substances present}

suppose 1 mole reacted

after certain time

N₂O₄ to 2NO_{2 .............alpha is dissociation constant}

1 - (alpha) 2(alpha)

total moles (1 + alpha)

v.d = 26

so molar mass of (1+alpha) = 26*2 = 52

grams of (1+alpha) moles = (1+alpha)52 = grams initially = 1*92

therefore,

alpha = 0.77

so dissociation is 77%