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Question 120 of 442 in Physical Chemistry

Experiments to measure the rate of reaction

2 marks · Easy

In an experiment, a student collects 36 cm³ of carbon dioxide gas in 3 minutes. Calculate the average rate of reaction in cm³/min.

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12 cm^3/min (±0)

Must show: unit: cm^3/min

Common mistakes: Incorrectly dividing by seconds instead of minutes; Not including units

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Marking points

M1 · 1 mark · Uses average rate formula: divides volume by time.

A1 · 1 mark · Correct answer of 12 cm³/min.

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