Rates of Reaction S3
Quiz by Mairi Mackenzie
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23 questions
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- Q1Which factor does not affect the rate of a chemical reaction?TemperatureConcentrationThe color of the reactantsSurface area30s
- Q2What happens to the rate of reaction when the temperature increases?It stays the sameIt becomes unpredictableIt generally increasesIt decreases30s
- Q3What is the effect of increasing the concentration of reactants on the rate of reaction?It turns the reaction into a gasIt generally increases the rate of reactionIt generally decreases the rate of reactionIt has no effect30s
- Q4What effect does increasing the surface area of a solid reactant have on the rate of reaction?It decreases the rate of reactionIt has no effectIt generally increases the rate of reactionIt makes the reaction slower30s
- Q5In a chemical reaction, what is the effect of adding a catalyst?It changes the products of the reactionIt increases the amount of reactants neededIt increases the time taken for the reactionIt lowers the activation energy required for the reaction30s
- Q6What role does surface area play in the rate of a chemical reaction involving solids?It changes the products of the reactionIt has no effect on the reaction rateIncreased surface area leads to a faster reaction rateIt slows down the reaction30s
- Q7If a reaction produces 40 mL of gas in 2 minutes, what is the rate of reaction in mL/min?20 mL/min25 mL/min80 mL/min10 mL/min30s
- Q8A reaction generates 60 grams of product in 5 minutes. What is the rate of reaction in grams per minute?15 g/min10 g/min60 g/min12 g/min30s
- Q9A reaction produces 150 grams of product in 30 minutes. What is the rate of reaction in grams per minute?15 g/min6 g/min4 g/min5 g/min30s
- Q1030s
- Q11In a rate of reaction graph, what does a steeper slope indicate about the rate of reaction?The temperature is decreasing.The reaction is stopping.The products are being formed more slowly.The reaction is occurring at a faster rate.30s
- Q12What does it mean when a rate of reaction graph levels off?The reaction is speeding up.The reactants are being produced.The temperature is increasing.The reaction has reached completion.30s
- Q13On a rate of reaction graph, what does the y-axis typically represent?The pressure of the reaction mixture.The color change of the reaction.The amount of product formed or reactant used over time.The temperature of the reaction.30s
- Q14What causes a decrease in the slope of a rate of reaction graph as the reaction progresses?The products are being consumed quickly.The temperature is decreasing.More reactants are being added continuously.The concentration of reactants decreases over time.30s
- Q15What do reaction rate graphs often display on the x-axis?Pressure of the system.Time.Volume of reactants.Temperature of the reaction.30s