According to the Lewis concept, acid is the substance that accepts a lone pair of electrons since it has empty orbitals in the valence shell. The... View Article
How fast is an electron moving if it has a wavelength equal to the distance it travels in one second? Sol: The distance travelled in one... View Article
According to the Arrhenius equation, the relationship between rate constant and activation energy is given as k =Ae_E0/RT Here, k is the... View Article
It is not the English alphabet v, it is the Greek letter nu. It represents the frequency of the wave. Frequency is the number of vibrations per second.... View Article
Starch is a polysaccharide made from polymers of glucose. Starch has two types of polysaccharide, one is the branched amylopectin and the other... View Article
Kerosene is made from more than 10 types of hydrocarbons. Each molecule consists of 10 to 16 carbon atoms. The main constituents are saturated... View Article
Einstein saw quantum physics as a way to describe nature in terms of subatomic particles, but he doubted if it is a useful basis to explain the... View Article
Latent heat is a positive quantity. The positive or the negative sign shows the direction of heat transfer. If the heat is added to the system... View Article
A hydrogen bomb is a nuclear weapon that works on the principle of nuclear fusion. Fusion is the process of combining smaller nuclei to form... View Article
A diluted form of sulphuric acid is called acidic water. Sulphuric acid is added to water in order to increase the number of ions. Therefore, the... View Article
Lithium may spontaneously ignite on contact with air when finely dispersed. Upon heating, it gives out toxic fumes. If lithium is inhaled it can... View Article
Hydrocarbons with only single bonds are called alkanes. Alkanes are called saturated hydrocarbons because each carbon is bonded with as many... View Article
Pb is in +4 oxidation state in PbCl4 and in +2 oxidation state in PbCl2. The charge on the cation Pb is more in PbCl4 than in PbCl2. Therefore,... View Article
NaCl is more soluble in water than KCl. Solubility depends on the size of the cation as the anion is the same. The solubility of NaCl is 359 g/L... View Article
The covalent character is determined using Fajan’s rule. In the given compounds, the anion is the same and the cations are different. The size of... View Article
An atom will become more electronegative when the oxidation number increases. A higher value in electronegativity means a stronger acid.... View Article
