Of the following substances, which one is NOT expected to dissolve in water?
1. Ca(OH)2
2. C7H16
3. CH3OH
4. C2H5OH
5. HNO3
6. C6H12O6
2007-11-01 17:27:18 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Number 2: C7H16 is a hydrocarbon alkane and hence is least polar as compared to the other organics such as CH3OH/C2H5OH which are polar alcohols having a small alky group.
C6H12O6 is a either glucose/fructose which is highly polar/hydrophilic having many hydroxyl groups and hence is soluble.
Ca(OH)2 and Nitric acid are inorganics which are highly water soluble.
Hence the answer is heptane C7H6 which is NOT SOLUBLE in water
2007-11-02 07:55:05 · answer #1 · answered by veryytterium 2 · 0⤊ 0⤋
Number 2, C7H16 is a hydrocarbon and is not soluble in water at all.
2007-11-01 17:33:48 · answer #2 · answered by chad c 2 · 0⤊ 0⤋
The correct answer is C. Why A is wrong: If the energy released is less that the energy to break the bonds, then the ionic bond won't even have enough energy to break bond. The energy released is used to overcome the intermolecular forces (to break bonds) Why B is wrong: Its an ionic solid, why would there be covalent bonds? And disolving ionic solid is an exothermic process. Why D is wrong: It is significant. The amount of energy needed to break a bond is dependent on intermolecular forces.
2016-05-27 00:04:31 · answer #3 · answered by Anonymous · 0⤊ 0⤋
#2. This is heptane, a component of kerosine or gasoline, depending on the actual structure.
2007-11-01 17:41:07 · answer #4 · answered by cattbarf 7 · 0⤊ 0⤋
C7H16
2007-11-01 17:33:46 · answer #5 · answered by Dr.A 7 · 0⤊ 0⤋