Factors affecting Rate of Reactions

Which of the following are the factors that affecting the rate of reactions?

• Size of reactants

• Concentration of reactants

• Temperature

• Presence of catalyst

• All of above

Which factor can only affects the rate of reaction when involved gases as the reactant?

• Concentration of reactants

• Pressure

• Temperature

• Size of reactants

Which of the following statement is correct?

• Smaller size of reactants, smaller total surface area, higher reaction rate

• Larger size of reactants, smaller total surface area, higher reaction rate

• Smaller size of reactants, larger total surface area, higher reaction rate

• Larger size of reactants, larger total surface area, higher reaction rate

____________ concentration of reactants, higher rate of reaction.

_____________ concentration of reactants by adding solute; ______________ concentration of reactants by adding solvent.

• Increase; Increase

• Decrease; Decrease

• Increase; Decrease

• Decrease; Increase

____________ temperature can ___________ the rate of reaction.

• Higher; increase

• Lower; increase

• Moderate; increase

Positive catalyst can __________ the rate of reaction; ___________ catalyst (inhibitor) can _____________ the reaction rate.

• decrease; negative; increase

• increase; negative; decrease

Does the presence of catalyst will change the amount of product?

• Yes

• No

The _________ the volume, the _________ the pressure, the __________ the reaction rate.

• smaller; higher; higher

• larger; higher; higher

• larger; lower; higher

• smaller; lower; higher

Which of the following can increase the rate of reaction?

(More than 1 option)

• Decrease the size of reactants

• Increase the temperature

• Presence of inhibitors

• Increase the concentration of reactants

• Increase the pressure