For a reaction X⟶Y, the graph of the product concentration (x) versus time (t) came out to be straight line passing through the origin. Hence the graph of −d[X]dt and time would be:
A
straight line with a negative slope and an intercept on y-axis
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B
straight line with positive slope and an intercept on y-axis
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C
a straight line parallel to x-axis
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D
a hyperbola
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Solution
The correct option is B a straight line parallel to x-axis
If the product concentration is x
For a zero-order reaction xt=k
Thus, the graph would be a straight line passing through the origin. So the given information is for zero order reaction. for zero order reaction, the rate of reaction is constant. Thus, the plot of rate vs time ie., −d[X]dt vs time will be a straight line parallel to the x-axis