Cp = 184 g , (eta) n = 80%
n = Cpx100/Ct
=> Ct = Cpx100/n = 184x100/80
=> Ct = 230 g
320 g ....... 230 g
2R-OH => R-O-R + H2O
2(R+17) ..... 2R+16
=> 2x230(R+17) = 320(2R+16)
=> 1,4375(R+17) = 2R + 16
=> R = 15
=> R-OH = 15 + 17 = 32 g/mol
=> CH3-OH = metanol