Two distillation columns are being used to separate a methanol-benzene mixture fed at 1000 kg-mol/hour. The feed stream is a temperature of 100degC and has composition 30% methanol and 70% benzene. The target objective is to generate two product streams, one containing 95% benzene and another containing 90% methanol. Design a process that uses two distillation columns with different operating pressures (from 0.1 to 2 bar) to carry out this separation.

How many liters of 3.0 m naoh solution will react with 0.60 liters of 4.0 m h2so4? h2so4 + naoh → na2so4 + h2o 1.2 l 1.6 l 2.4 l 2.8 l

Benzonitrile (c6h5cn) is reduced to two different products depending on the reducing agent used. treatment with lithium aluminum hydride followed by water forms k, which has a molecular ion in its mass spectrum at 107 and the following ir absorptions: 3373, 3290, 3062, 2920, and 1600 cm-1. treatment with a milder reducing agent forms l, which has a molecular ion in its mass spectrum at 106 and the following ir absorptions: 3086, 2850, 2820, 2736, 1703, and 1600 cm-1. l shows fragments in its mass spectrum at m/z = 105 and 77. propose structures for k and l and choose an explanation for how this could be concluded.

How to draw a diagram to represent a calcium metal lattice?