i need to add the insoluble compound to the water and see the reaction which occurs but the susbstance should be found in the home enviroment and i need to analyse the relationship between the solubility of substances in water and the polar nature of the water molecule, thanks very much
2007-08-28 19:42:51 · 7 answers · asked by lost girl 1 in Science & Mathematics ➔ Chemistry
also is soap one ?
2007-08-28 20:38:45 · update #1
Oil, is insoluble in water. Try some vegetable or olive oil.
2007-08-28 19:49:41 · answer #1 · answered by Bluemoon 2 · 0⤊ 0⤋
The adage is that like dissolves like. Water in polar so it dissolves polar substances (ionic compounds and polar organic compounds). Oils are non polar so they will dissolve non polar compounds.
This is how soap works. One part of the molecule is soluble in oil (non polar) the other water (polar). So when you use it you dissolve part in water and the other part will dissolve in the oil. So when you rinse the water will wash away the soap which is hanging on to the oil; removing it.
As suggested above add some cooking oil to water. They are immiscible and the oil should float on top. Then take some dish washing detergent add it to the oil and water and mix. The water will become cloudy, this is the detergent dispersing the oil in the water. Experiment with the quantities, only add a small amount of oil.
2007-08-29 04:09:50 · answer #2 · answered by ktrna69 6 · 0⤊ 0⤋
Your question is sort of confusing; if you need some household materials that don't disolve in water.
Almost all plastics, most oils, naphthalene (mothballs), sand, glass, soap scum (mostly calcium stearate, and related compounds), wax, pine pitch, mineral spirits, these are just a few.
Note: as you asked, soap actually is soluble in water, however, if it is "hard" water which contains trace minerals, usually Ca, Mg compounds, you will usually get some soap scum. Soap is the sodium salt of a fatty organic acid [such as steric acid] it reacts with calcium ions in the water to produce the calcium salt which is insoluble! If you use "soft' water there will be little or no scum formed.
2 CH3(CH2)16COONa + Ca+2 >>
[CH3(CH2)16COO]2Ca (insoluble) + 2Na+
2007-08-29 03:00:42 · answer #3 · answered by Flying Dragon 7 · 0⤊ 0⤋
Insoluble compounds means that the compound cannot be dissolved in water and therefore no reaction with water can take place.
Generally, molecules with a polar nature will dissolve in water.
2007-08-29 02:50:51 · answer #4 · answered by farrah_tahar 2 · 0⤊ 0⤋
A really good available insoluble molecular compound would be Silicon Dioxide. have fun!
2007-08-29 02:50:30 · answer #5 · answered by wise old sage 4 · 0⤊ 0⤋
silicon is an insoluble substance
2007-08-29 02:51:05 · answer #6 · answered by arun maari rajha 2 · 0⤊ 0⤋
anything organic will not dissolve in water, hmm like oils and plastics and so on. :) Have fun!!
2007-08-29 03:05:08 · answer #7 · answered by aussie_mjp 2 · 0⤊ 1⤋