1.

If D_(T) and D_(0) are the theoretical and observed vapour densities at a definite temperature and alpha bethe degree of dissociation of a substance. Then, α in the terms of D_(0),D_(T) and n (number of moles of product formed fro 1 mole reactant) is calculated by the formula:-

Answer»

`ALPHA=(D_(0)-D_(T))/((1-n)D_(T))`
`alpha=(D_(T)-D_(0))/((n-1)D_(T))`
`alpha=(D_(T)-D_(0))/((n-1)D_(0))`
`alpha=(D_(0)-D_(T))/((n-1)D_(T))`

Solution :`UNDERSET(1-alpha)(An) HARR underset(nalpha)(nA)`
`(D_(T))/(D_(0))=(1+alpha(n-1))/(1)`
`alpha=(D_(T)-D_(0))/((n-1)D_(0))`.


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