Certain insoluble organic compounds can be rendered soluble in water by the addition of an acidic or a base. Why do these organic compounds become soluble in water? a. The compound reacts to form water soluble carboxyl groups.
b. The acid or base decreases the polarity of the water and make it easier for the compound to dissolve.
c. The acid or base increase the polarity of the water and make it easier for the compound to dissolve.
d. The acid or base acts on the water and makes it a more hydrophobic solvent.
e. The organic compound becomes ionic.
f. The organic compound reacts and loses hydrophobic groups.

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.