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What does a steeper gradient on a rate of reaction graph indicate about the reaction rate?

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Rate of reaction

Question

What does a steeper gradient on a rate of reaction graph indicate about the reaction rate?

Answer

A steeper gradient on a rate of reaction graph indicates a faster reaction rate. This is because a steeper slope means that more reactant is beingconverted to product in a shorter amount of time.

Explanation

This question assesses the ability to interpret graphical data related to reaction rates. Understandingthe relationship between gradient and reaction speed is fundamental in chemistry.

Common mistake

Misinterpreting Tangents

Students often incorrectly draw tangents that do not touch the curve at the point of interest, leading to inaccurate rate estimates.

Ensure the tangent line touches the curve at the specific time point and is drawn so that it represents the slope accurately at that moment.

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A graph of the amount of product formed (in g) against time (in s) shows a steep curve at the start that gradually flattens. At 30 s the curve is almost horizontal. Which statement best describes the rate of reaction at 30 s?

What does a steeper gradient on a rate of reaction graph indicate about the reaction rate?

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A graph of the amount of product formed (in g) against time (in s) shows a steep curve at the start that gradually flattens. At 30 s the curve is almost horizontal. Which statement best describes the rate of reaction at 30 s?