Pragati Classes Chemistry Faculty Interview Questions, Process, and Tips

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...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 g...read more

The Arrhenius equation describes the relationship between the rate constant of a chemical reaction and temperature.

• The equation is given as k = Ae^(-Ea/RT), where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant, and T is the temperature.

• The Arrhenius equation helps to explain the effect of temperature on reaction rates.

• Higher temperatures generally lead to hig...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), w...read more