A compound has the empirical formula C(1...

A compound has the empirical formula `C_(10)H_(8) Fe`. A solution of 0.26 gof the compound in 11.2 g of benzene `(C_6H_6)` boils at `80.26^@C.` The boiling point of benzene is `80.10^@C, K_b" is 2.53"^@C"/molal".` What is the molecular formula of the compound?

`C_(30) H_(24)Fe_(3)`

`C_(10)H_(8)Fe`

`C_(40)H_(32)Fe_(4)`

`C_(20)H_(16)Fe_(2)`

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The correct Answer is:

`80.26, Delta T_(b)= 0.16, 0.16 = 2.53 xx (0.26//M)/(11.20) xx 1000, M ~~ 367`

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