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A solution of 20g substance in 200g of b...

A solution of 20g substance in 200g of benzene shows elevation in B.P. is 0.17 and an another solution which contains 20g of same substance in 200g of `C_2H_5OH` shows elevation in B.P. is "X". The value of X
Given: Substance form dimer (100%) in benzene while substance exists as monomer in ethyl alcohol `(C_5H_5OH)`.
`K_b` of `C_6H_6 = 2.53^@C//molal, K_b of C_2H_5OH= 0.37^@C//molal`

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