On a rate graph showing product formed over time, what causes the gradient to eventually flatten out? The temperature has increasedThe reactant has been used upThe activation energy has been used upThe temperature has reduced
Question
On a rate graph showing product formed over time, what causes the gradient to eventually flatten out? The temperature has increasedThe reactant has been used upThe activation energy has been used upThe temperature has reduced
Solution
The gradient on a rate graph showing product formed over time eventually flattens out because the reactant has been used up.
Here's a step-by-step explanation:
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A rate graph shows the amount of product formed over time in a chemical reaction. The gradient of the graph represents the rate of the reaction.
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At the start of the reaction, there are plenty of reactants, so the reaction rate is high, and the gradient of the graph is steep.
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As the reaction progresses, the reactants are gradually used up. This means there are fewer reactant particles to collide and react, so the reaction rate decreases.
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Eventually, when all the reactants are used up, the reaction stops. At this point, no more product is being formed, so the rate of the reaction is zero, and the gradient of the graph flattens out.
Note: Changes in temperature or activation energy can also affect the rate of a reaction, but they do not cause the gradient to flatten out over time. The gradient flattens out because the reactants are used up.
Similar Questions
Explain why rate of reaction graphs flatten out over time.
The rate of a reaction is plotted on a graph with time on the x axis and amount of product on the y axis. What would you expect the profile of the graph to look like? Steep gradient that peaks and then decreases back down againShallow gradient that gradually becomes steeperSteep gradient that increases in a straight line before flattening outSteep gradient initially followed by a decreased gradient that eventually flattens out2A rate graph has a steep gradient initially followed by a decreased gradient that eventually flattens out. Which point on the graph indicates the time that the reaction stopped? Exactly half way up the steep gradientWhen the timer is stoppedAs the gradient starts to flatten outAs the gradient starts to decrease3When comparing different rate graphs, which of the following profiles shows the highest rate of reaction?Steepest gradientMost product formedShallowest gradientLeast product formed4On a rate graph showing product formed over time, what causes the gradient to eventually flatten out? The reactant has been used upThe temperature has reducedThe temperature has increasedThe activation energy has been used up
A rate graph has a steep gradient initially followed by a decreased gradient that eventually flattens out. Which point on the graph indicates the time that the reaction stopped?
The rate of a reaction is plotted on a graph with time on the x axis and amount of product on the y axis. What would you expect the profile of the graph to look like?
When comparing different rate graphs, which of the following profiles shows the highest rate of reaction?Least product formedSteepest gradientMost product formedShallowest gradient4On a rate graph showing
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