Which of the following can be used to measure the rate of a reaction?Quantity of reactant used – Quantity of product formed Quantity of reactant usedQuantity of reactant used/timeQuantity of product formed

Which of the following can be used to measure the rate of a reaction?Quantity of reactant used – Quantity of product formed Quantity of reactant usedQuantity of reactant used/timeQuantity of product formed2What units are used for measuring change in mass/time?Micrograms per second Grams per minute Grams per secondMicrograms per minute3One way of measuring the rate of reaction is to draw a graph of the progress as it happens. What units are always plotted on the x axis?Volume of gas (cm3)Time (s) Mass of reactant (g)Mass of product (g)4To measure the volume of a gas formed in a reaction, when might you choose to use a gas syringe rather than a measuring cylinder?To measure an insoluble gasTo measure a toxic gasTo measure a coloured gasTo measure a soluble gas5A student investigated the rate of a reaction by measuring the mass lost. The reactant weighed 6 g at the start of the reaction and 4.8 g at the end, and the reaction took 2 minutes 30 seconds to complete. What was the rate of the reaction? 0.032 g/s0.48 g/s0.04 g/s0.008 g/s

One way of measuring the rate of a reaction is to take regular measurements of the mass of a solid reactant.

Describe what a reaction rate is and how it can be measured.

Complete the sentence below: A rate is used to how quantities change.

What must be known for the rate constant to be calculated from the rate law?A.The reaction rate at known product concentrationsB.The temperature at the beginning of the reactionC.The reaction rate at known reactant concentrationsD.The activation energy the reaction must overcome