Q. What type of elements share electrons to form a covalent bond?
In a covalent bond, the atoms bond by sharing electrons. Covalent bonds usually occur between nonmetals. For example, in water (H2O) each hydrogen (H) and oxygen (O) share a pair of electrons to make a molecule of two hydrogen atoms single bonded to a single oxygen atom.
Q. Where do the electrons in a covalent bond come from?
A covalent bond is formed when a pair of electrons is shared between two atoms. These shared electrons are found in the outer shells of the atoms. In general, each atom contributes one electron to the shared pair of electrons.
Table of Contents
- Q. What type of elements share electrons to form a covalent bond?
- Q. Where do the electrons in a covalent bond come from?
- Q. Why is ethanol not a hydrocarbon?
- Q. Why ethanol is saturated?
- Q. Is ethanol being flammable a physical property?
- Q. Why is ethanol pH 7?
- Q. What is the pH of 70% ethanol?
- Q. What pH is whiskey?
- Q. What is the pH of isopropyl alcohol?
- Q. Is isopropyl alcohol safe to use on skin?
Q. Why is ethanol not a hydrocarbon?
(ii) (iii) Hydrocarbons are composed of C and H only, ethanol has an -OH group therefore is not a hydrocarbon. Explains that ethanol contains an -OH group (or O atom) therefore is not a hydrocarbon since it is composed of more than C and H.
Q. Why ethanol is saturated?
The formula for ethanol is CH3CH2OH. Basically, saturated hydrocarbon are those compounds which contain only single carbon-carbon bond,no double or triple bonds. Ethanol has only single carbon-carbon bonds. So it is a saturated hydrocarbon.
Q. Is ethanol being flammable a physical property?
Ethanol’s chemical formula is C2H5OH. Pure ethanol is a flammable, colorless liquid with a boiling point of 78.5° C. Its low melting point of -114.5° C allows it to be used in antifreeze products. It has a pleasant odor reminiscent of whiskey….See Also:
| Methane | Ethanol |
|---|---|
| Propane | Pentane |
Q. Why is ethanol pH 7?
Ethanol’s hydroxyl group causes the molecule to be slightly basic. It is almost neutral like water. The pH of 100% ethanol is 7.33, compared to 7.00 for pure water. This reaction is not possible in an aqueous solution, as water is more acidic, so that hydroxide is preferred over ethoxide formation.
Q. What is the pH of 70% ethanol?
Odor: Alcohol Vapor pressure: 73 mm Hg @ 20 C Odor threshold: 10 ppm Vapor density: 1.59 pH-value: Not determined Relative density: 0.790 @ 20°C Melting/Freezing point: -114.1C Solubilities: infinite solubility. Reactivity: Stable under normal conditions of use and storage.
Q. What pH is whiskey?
Whiskey is composed of mostly ethanol (pH = 7.33) and water.
Q. What is the pH of isopropyl alcohol?
around 8
Q. Is isopropyl alcohol safe to use on skin?
Isopropyl alcohol is readily absorbed through the skin, so spilling large amounts of IPA on the skin may cause accidental poisoning. Small amounts of IPA on the skin is generally not dangerous, but repeated skin exposure can cause itching, redness, rash, drying, and cracking.
