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InterviewSolution
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Degree of dissociation `(alpha)` `alpha` are the number of moles which are dissociating from 1 mole of given reactants and gas density measurements can be used to determine the degree of dissociatin. Let us take a general case where one molecule of a substance A splits up into n molecules of A(g) on heating i.e., `A_(n)(g)hArrnA(g)` `t=0a` `t =t_(eq)a-x nx " "alpha=x/aimpliesx=a alpha` `a-a alpha n a alpha` Total number of Moles `=a-a alpha +n a alpha``=[1+(n-1)alpha]a` Observed molecular weight of molar mass of the mixture `M_("mixture")=(M_(A_(n)))/([1+(n-1)alpha]),M_(A_(n))=` Molar mass of `A_(n)` If the t otal mass of the mixture in question (1) is 300 gm, then moles of C(g) present areA. `1/4`B. `4/3`C. `3/4`D. `1/2` |
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Answer» Correct Answer - C |
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