the questions of effects hydrogen bond of boiling point

There is delocalisation of electrons in haloarenes due to resonance. For example, chlorobenzene is considered to be a resonance hybrid of the following structures:..

. Therefore, in the presence of attacking reagent, one bond is lost and this negatively charged attacking reagent links to the carbon having positive charg..

Bonding in Covalent Solids - In covalent solids, the constituent particles are atoms of same or different kinds. Covalent bonds network, forming a continuous giant interlocking structure of atoms throughout the crystal that hold them together. They are also referred to as covale..

Orbital Representation of Covalent Bonds - Covalent bonds are formed by the overlap of atomic orbitals. As orbitals have different shapes, it is difficult to represent the actual shape of the orbitals on the paper. Hence a pictorial notation is adopted with the following rules: ..

Resonance or Mesomeric Effect - If two or more structures can be assigned to a molecule, none of which is capable of describing all the known properties of the compound, then the actual structure is known to be a resonance hybrid or an intermediate of these structures. The various structu..

Requirements: 6g of granular zinc 10 mL of 1 M HCl, 10 mL of 2 M HCl, A graduated syringe and a boiling tube. The syringe is attached to the boiling tube and the reaction is carried out with 3g of zinc and 5 mL of 1 M HCl and next with 3g of zinc and 5 mL of 2..

Man Made Green House Effect - Normal green house effect was principally dominated by H 2 O (vapour), CO 2 and O 3 the interception of infrared radiation by these gases was in the wavelength ranges as given below: Water vapour - 6 - 25 m m CO 2h..

Let a battery maintain a steady current I through the circuit, and a potential difference V between the two ends 'a' and 'b' of the resistor. Let D t be the time taken by the charge to flow from a to b, and D q the amount of charge crossing point a in time D t. Then The loss in electrical..

The depletion of ozone layer poses a severe threat to mankind. Along with the above-mentioned gases, other pollutants such as methane (CH 4 ), carbon dioxide (CO 2 ) have caused a hole in the ozone layer. A hole or a decreased concentration of ozone in stratosphere results in the influx ..

Since the denominator in the RHS of the above equation is less than 1, f 1 > f 2 . Thus, the increase in the apparent frequency is greater when the source approaches a stationary observer than, when the observer approaches a stationary source. In other words, Doppler effect i..