Chemistry

What is an anti-oxidant? Anti-oxidant is a type of chemical or artificial food preservative that mainly preserves food by protecting it from oxidative degradation.

Chemical equilibrium is always dynamic-explain it. In a reversible reaction, if the rate of forward reaction and backward reaction becomes equal, it is said to have reached a state of equilibrium. Since at the state of equilibrium, the rate of the forward reaction and the backward reaction remains equal, the reactions appear to have come … Read more

Define electron affinity The electron affinity of an atom is the amount of energy released by 1 mole of an isolated neutral gaseous atom when each accepts an electron to form an unchanged negative ion.

What is the emission spectrum? The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making transmission from a high energy state to a lower energy state.

What is Henry’s Law? At a constant temperature, the amount of a given gas dissolved in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid.

Define Hund’s rule. Hund’s rule governs the distribution of electrons in orbitals of the same energy level. It says, “Electrons pairing in any orbital of the same sub-level will not occur until each orbital contains one electron”. Hund’s Rule Explained Hund’s rule, sometimes referred to as Hund’s rule of maximum multiplicity, is a fundamental principle … Read more

Explain the buffer action of blood. To maintain the pH of blood buffered system work.  e.g. (1) Carbonate buffer (2) Phosphate buffer (3) Protein buffer. 1) Carbonate Buffer: The buffer action is due to the creation of equilibrium by the dissociation of H2CO3 formed during respiration: CO2+H2O → H2CO3 H2CO3 → H+ + HCO3– 2) Phosphate Buffer: Another buffer … Read more

Why are different spectrums for different elements? Each element has a different atomic spectrum. The production of a line spectrum by the atoms of an element indicates that an atom can radiate only a certain amount of energy. This leads to the conclusion that bound electrons cannot have just any amount of energy but only … Read more