In an experiment magnesium ribbon was reacted with dilute sulphuric (VI) acid and the volume of hydrogen gas produced with time noted. The graph below...

In an experiment magnesium ribbon was reacted with dilute sulphuric (VI) acid and the volume of hydrogen gas produced with time noted. The graph below shows the volume of gas produced with time


Explain the following observations.
(i) The curve of the graph is steepest at the beginning.
(ii) The curve of the graph completely flattens at region AB.
(iii) On the same axis plot the curve that would be obtained if the acid used was ethanoic acid. Label it ethanoic acid

Answers

(i) At the beginning the graph is steepest because the rate of reaction is high due to the high concentration of the reactants(reactants not used up)

(ii) AB – Marks the end point of the reaction that is, reaction has ended / one of the reactants is used up


(iii)

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maurice.mutuku answered the question on September 17, 2019 at 06:20

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