10+ Chemistry Faculty Interview Questions and Answers

Molarity is the concentration of a solution in terms of moles of solute per liter of solution, while molality is the concentration of a solution in terms of moles of solute per kilogram of solvent.

• Molarity is an extensive property, while molality is an intensive property.

• Molarity changes with temperature and pressure, while molality remains constant.

• Molality is preferred in calculations involving colligative properties.

• Example: A solution containing 1 mole of solute in 1 lite...read more

Vapour pressure is the pressure exerted by a vapour in equilibrium with its liquid or solid form, while partial pressure is the pressure exerted by a single gas in a mixture.

• Vapour pressure is specific to a substance, while partial pressure is a property of a gas in a mixture.

• Vapour pressure is dependent on temperature, while partial pressure is dependent on the concentration of the gas in the mixture.

• In a mixture of gases, the total pressure is the sum of the partial pressur...read more

Entropy is the measure of disorder or randomness in a system, while enthalpy is the measure of heat energy in a system.

• Entropy is a state function, while enthalpy is a path function.

• Entropy increases with an increase in disorder, while enthalpy increases with an increase in heat energy.

• Entropy is represented by the symbol S, while enthalpy is represented by the symbol H.

• Entropy is measured in joules per kelvin (J/K), while enthalpy is measured in joules (J).

• An example of entr...read more

Packing efficiency is the ratio of the volume occupied by particles to the total volume of the container. Limiting reagent is the reactant that gets consumed first and limits the amount of product formed. Aspirin can be prepared from phenol by acetylation using acetic anhydride and a catalyst.

• Packing efficiency is important in determining the density of a material.

• Limiting reagent can be identified by calculating the amount of product that can be formed from each reactant.

• Asp...read more

Teaching strategy should be tailored to the individual needs of the student, whether they are a slow runner or quick grasper.

• For slow runners, it is important to break down concepts into smaller, more manageable pieces and provide additional support and resources.

• For quick graspers, it is important to challenge them with more advanced material and encourage independent learning.

• Differentiated instruction can be used to meet the needs of both types of learners.

• Examples: provid...read more

Packing efficiency refers to the amount of space occupied by atoms/molecules in a crystal lattice. Deficiency defect is a type of crystal defect.

• Packing efficiency is the ratio of the volume occupied by atoms/molecules to the total volume of the unit cell.

• It can be calculated using the formula: Packing efficiency = (Volume of atoms/molecules in unit cell) / (Total volume of unit cell)

• Deficiency defect is a type of point defect in which some atoms/molecules are missing from th...read more

The structure of an element in period 14 depends on its atomic number and electron configuration.

• Elements in period 14 can have various structures depending on their atomic number.

• The structure can be determined by the electron configuration of the element.

• For example, if element X has an atomic number of 57, its structure would be [Xe] 4f^14 5d^1 6s^2.

The byproduct of reacting iodine with alcohol is iodoalkane.

• When iodine reacts with alcohol, it replaces the hydrogen atom in the alcohol molecule.

• The resulting compound is called iodoalkane or alkyl iodide.

• The reaction is an example of a substitution reaction.

• For example, when iodine reacts with ethanol, the byproduct is ethyl iodide.

EDTA is used in titration to chelate metal ions and prevent interference from other metal ions.

• EDTA forms stable complexes with metal ions, making it easier to determine the concentration of the metal ion being titrated.

• EDTA can be used to titrate a variety of metal ions, including calcium, magnesium, and zinc.

• EDTA is often used in complexometric titrations, where the goal is to determine the concentration of a metal ion in a sample.

• EDTA can also be used to remove metal ions ...read more

Sandmeyer's reaction is a chemical reaction used to convert an aryl diazonium salt to a halide, hydroxide, or cyano compound.

• Involves the replacement of the diazonium group (-N2+) with a halogen, hydroxyl, or cyano group.

• The reaction is carried out in the presence of a copper(I) salt and an acid.

• The reaction can be used to synthesize a variety of compounds such as chlorobenzene, bromobenzene, iodobenzene, phenol, and benzonitrile.

• The reaction mechanism involves the formation ...read more

A buffer solution is a solution that resists changes in pH when small amounts of acid or base are added to it.

• Buffer solutions are made up of a weak acid and its conjugate base or a weak base and its conjugate acid.

• They are used in various chemical and biological processes to maintain a stable pH.

• Examples of buffer solutions include acetic acid/sodium acetate buffer and phosphate buffer.

• Buffer capacity is the amount of acid or base that can be added to a buffer solution witho...read more

Group 17 elements are also known as halogens.

• Group 17 elements are highly reactive nonmetals.

• They have 7 valence electrons and tend to gain 1 electron to achieve a stable octet.

• Halogens include fluorine, chlorine, bromine, iodine, and astatine.

• They are found in various compounds and play important roles in chemistry and biology.

Yes, I can conduct a demonstration class showcasing key chemistry concepts through engaging experiments.

• Use visual aids like molecular models to explain structures.

• Conduct simple experiments, e.g., vinegar and baking soda reaction to demonstrate acid-base chemistry.

• Incorporate real-life applications, such as the chemistry of cooking or cleaning products.

• Encourage student participation by having them predict outcomes of experiments.

• Utilize technology, like simulations, to illu...read more

Salt is a compound formed by the reaction of an acid with a base. It consists of positive and negative ions and is commonly used for seasoning and preserving food.

• Salt is composed of positive ions (cations) and negative ions (anions)

• Common examples of salt include sodium chloride (table salt), potassium chloride, and calcium chloride

• Salt is formed through the reaction of an acid with a base, resulting in the neutralization of the acid and base

• Salt is widely used for seasoning...read more

I possess a strong foundation in chemistry, with a passion for research and teaching that drives my commitment to student success.

• Extensive research experience in organic synthesis, demonstrated by my published papers.

• Strong communication skills, evidenced by successful presentations at national conferences.

• Dedication to student mentorship, having guided several undergraduate projects to completion.

• Innovative teaching methods, such as incorporating technology to enhance learn...read more