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

The profile of the graph would look like a steep gradient initially followed by a decreased gradient that eventually flattens out. This is because at the start of the reaction, the reactants are in high concentration and react quickly. As the reaction progresses, the concentration of reactants decreases, slowing the reaction rate. Eventually, the reaction reaches a point where the reactants are used up and the reaction stops, causing the graph to flatten out.

The point on the graph that indicates the time that the reaction stopped is as the gradient starts to flatten out. This is because the flattening of the gradient indicates that the reaction rate is slowing down and eventually stops, which means the reaction has stopped.

When comparing different rate graphs, the profile that shows the highest rate of reaction is the steepest gradient. This is because the steeper the gradient, the faster the reaction rate.

On a rate graph showing product formed over time, the gradient eventually flattens out because the reactant has been used up. As the reactant is used up, the reaction rate slows down and eventually stops, causing the gradient to flatten out.