Question

The organic compou gasoline to burn more cleanly MTBE has been found in the dri e compound MTBE (methyltertiarybutylether) is used as a fuel additive that allows o burn more cleanly thus leading to a reduction in pollution. Recently, however, as been found in the drinking water of a number of communities. As a result several Sare phasing out the use of MTBE as a fuel additive. A combustion experiment using g of MTBE was found to produce 24.97g of CO2 and 12.26 g of H30 It is the empirical formula of MTBE assuming it contains C, H, and only? (b) The molar mass of MTBE was experimentally determined to be 88.1 g/mol. Using this information what is the molecular formula of MTBE

Answer 1

Mass of (0,: мом оf Н0 - 12-263 MWof MD=8 gime Mwo (o-u4gmot" 24.92g Moles 12-26 g Moles= - 0.5615 0.6811 moles ич дмаг mole 18gfmel Mole of C in MTBe = 0.5675 meles moles of Hin MTBE 0.6812 = 13622 Melej ( 2H in 1 0 mole) may of c' 0.565 mal x (2 g mal -3622 -3622 ml x 1 gmel May of o' = man of MTBE - (маи оf с + маu of m) 0 (6-81+ -3622) 1-82183 1.2 39 moles of 0 = O.1142 moles 16 gMDIT to get whole numbers Motes of C H&0 with 0.1141 Dividing C a 0.S675 empincal moles for O.I42 .3622 H - 12 O-142 o. 14 empicel fomula is Cs M0 (2 5 (12x1) + (16x1) empirical masy = (b) 88 gimal molaYmau empinical ma erpinial fevnu le Moleculor formuloz