CPT Chemical Process Fundamentals & Reactions 2

Question 1

What is stoichiometry used for in chemical process operations?

Accepted Answer

Calculating the quantitative relationships between reactants and products

Answer

Determining the physical properties of process streams

Answer

Measuring the viscosity of process fluids

Answer

Selecting the correct valve type for a given pressure drop

Question 2

What is activation energy in the context of chemical reactions?

Accepted Answer

The minimum energy required for reactants to form products

Answer

The total energy released when products form

Answer

The heat content of the product molecules

Answer

The energy stored in chemical bonds of the reactants

Question 3

In a neutralization reaction between a strong acid and a strong base, what are the typical products?

Accepted Answer

A salt and water

Answer

An oxide and hydrogen gas

Answer

Carbon dioxide and water vapor

Answer

An ester and an alcohol

Question 4

In terms of electron transfer, what is oxidation?

Accepted Answer

Loss of electrons by a species

Answer

Gain of electrons by a species

Answer

Transfer of protons from one atom to another

Answer

Formation of a covalent bond between two atoms

Question 5

What does the equilibrium constant (Keq) indicate about a chemical reaction?

Accepted Answer

The ratio of product concentrations to reactant concentrations at equilibrium

Answer

The speed at which equilibrium is reached

Answer

The activation energy of the forward reaction

Answer

The amount of catalyst required to drive the reaction

Question 6

What is the mole concept, and why is it important in chemical process calculations?

Accepted Answer

A counting unit representing 6.022 × 10²³ particles, enabling mass-to-particle conversions

Answer

A unit of temperature used in thermodynamic calculations

Answer

A measure of the viscosity of process fluids at standard conditions

Answer

A ratio used to determine the flow rate of gases in pipelines

Question 7

Which of the following correctly describes an endothermic chemical reaction?

Accepted Answer

Absorbs heat from surroundings; products are at higher energy than reactants

Answer

Releases heat; products are at lower energy than reactants

Answer

Occurs spontaneously at all temperatures without energy input

Answer

Produces an electrical current as a by-product