In: Chemistry
O2, CO2, HCl, NaCl, CH4, C8H18, CH3CH2OH, (CH3)2CHNH3 +Cl- , CH3(CH2)6OH.
Find and compare their molar solubilities (mol/L) in water at ambient conditions. Briefly discuss how solubility is related to molecular structure. Describe possible effects of raising temperature and pressure on solubility of these species.
O2 --> very low solublility in water, since it is a nonpolar gas
CO2 --> low solubiliy, since it s a gas, will form equilbirium with water to form carbonicacid
HCl -> high solubility, since it is a very electronegative hyogen halide
NaCl --> high, since it is ionic, will form cation/anions
CH4 --> very low solublility in water, since it is a nonpolar gas. Smaller than O2, so it will be slightly more soluble
C8H18 --> this is octane, a nonpolar species, will not be soluble in water due to organic layer formation
CH3CH2OH ---> polar sample, will form hydrogen bonding with water, as well. Very soluble
(CH3)2CHNH3 +Cl- ---> ionic species, will form 100% dissociation
CH3(CH2)6OH --> very low solubility since it is more nonpolar than - polar
b)
If increase in T is done, then, solubility of liquids: increases
solubility of salts (solids) --> increases the mosts
Solubility of gas --> decreases, since gases prefer gas phase