Catalysts

A catalyst be regenerated or used again and again

• False

• True

Which one of the following is not an example for heterogenous catalysis?

• Hydrogenation of oil

• Manufacture of ammonia by Haber's process

• Manufacture of sulphuric acid by Contact process

• Hydrolysis of sucrose in presence of dilute hydrochloric acid

A substance that increases the rate of a reaction without being used up during the reaction is called a

• catalyst

• product

• reactant

• solute

Tags

NGSS.HS-PS1-5

Which of these are the best choice of catalysts?

• Expensive and reusable

• Cheap and insensitive to impurities

• Cheap and easily poisoned

• Cheap and reusable

In homogeneous catalysis, reactants and catalysts are in the ___________ phase with each other.

• Different

• Same

In heterogeneous catalysis, reactants and catalysts are in a __________ phase with each other

• Different

• Same

Which of these are the BEST way to dispose waste catalyst? There are 2 correct answers.

• Landfill

• Reuse the waste catalysts

• Regenerate the waste catalysts

• Leaching by water

Tags

NGSS.HS-ETS1-3

NGSS.HS-LS2-7

The minimum amount of energy needed for colliding particles to react is called the

• Chemical Energy

• Kinetic Energy

• Activation Energy

• Potential Energy

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

Which type of catalyst works by having reactant molecules adhering to its surface thus weakening the strength of the reactant bonds?

• homogeneous

• heterogeneous

What is the primary role of a catalyst in a chemical reaction?

• To increase the temperature of the reaction

• To decrease the activation energy of the reaction

• To change the equilibrium position of the reaction

• To increase the pressure of the reaction