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Which graph correctly illustrates how the volume of hydrogen gas evolved changes with time when hydrochloric acid at $40\,^{\circ}\text{C}$ is used? (a) (b) (c) (d)
Chemistry 5070 · O Level · Rate of reaction
Rate of reaction — practice question
A student places excess zinc into $50\,\text{cm}^3$ of $1.00\,\text{mol dm}^{-3}$ hydrochloric acid at $20\,^{\circ}\text{C}$. A graph, labelled G, is drawn to show how the volume of hydrogen gas produced changes with time.
The experiment is carried out again under the same conditions, but this time the hydrochloric acid is at $40\,^{\circ}\text{C}$.