Question

Arrange the following molecules in order of decreasing vapor pressure. Then arrange in order of increasing...

Arrange the following molecules in order of decreasing vapor pressure. Then arrange in order of increasing viscosity.

Cinnamalhyde

acetic acid

water

isopropyl alcohol

cyclohexane

benzene

ethanol

methanol

acetone

siethyl hydroxide

ammonium hydroxide

carbonic acid

phenolphthalein

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Answer #1

Order of vapor pressure, will depend on the volatility of compounds, more volatile will form more vapor and high vapor pressure

now this depends on the composition of molecule and bond strength of its atoms.

Order of vapor pressure from high to low is

Acetaldehyde > acetone> benzene > ethyl acetate > ethylene glycol > formaldehyde > heptane > methanol > cyclehexane > isopropyl alcohol > benzene > carbonic acid> phenolphthalein

and order of viscocity will depend on the solubility of compound in any viscous material,

order will be (less to high)

chloromethane< methanol < ethanol < isopropyl alcohol < acetone < Cinnamalhyde < water < acetic acid < < cyclohexane < benzene < aluminium dioxide < ethyl hydroxide < carbonic acid < phenolphthlein

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