Question

For a reaction X → Y, the graph of the product concentration (x) versus time (t) came out to be a 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

(b) straight line with a positive slope and an intercept on y-axis

(c) a straight line parallel to x-axis

(d) a hyperbola.

Answer 1

Correct option (c) a straight line parallel to x-axis

Explanation:

 If product concentration is x.

For a zero order reaction x/t = k

Thus graph would be a straight line passing through origin. So the given information is for zero order reaction. For a zero order reaction, rate of the reaction is constant.

 Thus, plot of rate vs time, r.e., = d[X]/dt vs.

time will be a straight line parallel to x-axis.