Today was about polar and non polar. I need some help with these questions please !!
1) Between ammonia and carbon dioxide gas, which is soluble in water?
2) Rank methanol, ethanol and butanol in terms of INCREASING SOLUBILITY
UltimaOnline
Eh u student or tutor? Looking for (tuition) job right now?
Whether u student or u tutor, don't expect pple to spoonfeed u with answers hor. Give ur own answers (with ur reasons), and I'll comment on them.
Of course, if anyone else reading this thread wants to give ur answers to LookingForJob's qns, feel free to go ahead.
UltimaOnline
Eh so fast give up liao ah? Dun like that leh. Try lah. Spoonfeeding u answers wun help u as much as giving u guidance on ur own working attempts.
Comment on ur 1st qn : "Solubility" is a general term, that most often refers to hydration, but in some cases involves hydrolysis. CO2 actually undergoes limited hydration (ie. physical interaction with water), not only because : the CO2 molecule only has the capacity to accept but not donate hydrogen bonds ; although CO2 is overall non-polar, its linear geometry allows for possible permanent dipole - permanent dipole interactions with water; but in addition also because it undergoes more extensive hydrolysis (ie. chemical reaction with water) to generate the weak diprotic carbonic(IV) acid, but whose position of equilibrium tends back towards aqueous then gaseous CO2, due to thermodynamically favorable positive entropy change. Overall, NH3 (which can both accept and donate hydrogen bonds) is considered a lot more soluble than CO2 (though most A level students and even JC teachers oversimplify CO2 to be non-polar, and thus underconsider CO2's capacity for hydration and hydrolysis as I've raised above).