5.6.1.1 AQA Rate of Reaction Quiz

What is the formula for calculating the mean rate of a chemical reaction using the quantity of reactant used?

• quantity of reactant used / time taken

• time taken / quantity of reactant used

• quantity of product formed / time taken

• time taken / quantity of product formed

What units can be used to express the rate of reaction?

• g/s or cm³/s

• m/s or km/h

• kg/m³ or L/s

• mol/s or kg/s

In higher tier studies, what additional measurement is required for calculating the rate of reaction?

• Quantity of reactants in moles

• Volume of reactants in liters

• Mass of products in kilograms

• Temperature in Celsius

What should you be able to calculate regarding the rate of reaction?

• Mean rate from given information

• Exact time of reaction

• Temperature change during reaction

• Pressure change during reaction

What is the purpose of drawing tangents to curves on graphs? (HT question)

• To use the slope as a measure of the rate of reaction

• To find the color of the curve

• To determine the type of reaction

• To calculate the mass of reactants

What is the formula for calculating the mean rate of a chemical reaction using the quantity of product formed?

• quantity of product formed / time taken

• time taken / quantity of product formed

• quantity of reactant used / time taken

• time taken / quantity of reactant used

What is the significance of using moles in higher tier calculations?

• It provides a more accurate measure of reactants

• It changes the color of the solution

• It increases the temperature of the reaction

• It decreases the pressure of the system

What is the unit for rate of reaction in terms of moles?

• mol/s

• g/s

• cm³/s

• kg/s

What can be measured by the mass in grams or by a volume in cm³?

• Quantity of reactant or product

• Temperature of the reaction

• Pressure of the system

• Color of the solution

What is the purpose of calculating the gradient of a tangent to the curve on a graph?

• To measure the rate of reaction at a specific time

• To determine the color of the graph

• To find the mass of the reactants

• To calculate the temperature change