A liquid mixture containing ether CH3-O-CH3 at a ratio of 0.58 and methano; CH3OH if the total pressure of the vapor P total= 1600 K pa and the proportion of methanol in the vapor 0.36 calculate 1- PE ether steam pressure  2- PE methanol steam pressure   3- yE the proportion of ether in the steam   4- XM the proportion of methanol in the liquid   5- PM standard ratio of methanol    6- pE  standard ratio of ether

The liquefied petrolieum gas(LPG) is composed of 80% C;Hg and 20% C4H10 in mass basis. (1). Determine the molar fraction of C3H8 and C4H10 in LPG. (2). Determine the stoichiometric air fuel ratio of the LPG. (3). Determine the lower heating value of LPG in kJ/m³ at 25°C and 100 kPa. (4). LPG is mixed with excess air to burn in a boiler at 100 kPa. The CO2 in burned gas is 7% on dry basis. Determine the equivalence ratio of the mixture.

Imagine that we have a closed system containing pure isobutane that is in a state of vapor-liquid equilibrium at known P sat < Pc. What can we say about mean translational kinetic energy of the molecules in the liquid (KL) and vapor (KV ) phases? a) KV − KL > 0 b) KV − KL < 0 c) KV − KL = 0 d) We need more information.

2-E, A liquid mixture of 30 mol benzene, 30 mol toluene, and 40 mol water initially at 70°C and 101.3 kPa total pressure is heated slowly at a constant pressure of 101.3 kPa to 90°C. The vapor generated stays in contact with the remaining liquid. Assuming equilibrium between phases at all times, estimate (a) the temperature at which vaporization begins, (b) the composition of the first vapor. (c) the temperature at which vaporization is complete, and (d) the composition of the last liquid. Note: Water is essentially totally immiscible with benzene and toluene. Each liquid phase contributes to the total vapor pressure. Over the temperature range involved, the vapor pressure of benzene is 2.60 times that of toluene, and the vapor pressure of water is 1.23 times that of toluene. Vapor pressure of water is: T. °C 70 72 74 76 78 80 82 84 86 88 90 P, kPa 31.2 34.0 36.9 40.1 43.6 47.3 51.3 55.6 60.1 64.9 70.1