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Rates of reaction

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Question 88

A student investigated the rate of reaction between magnesium ribbon and excess dilute hydrochloric acid.

They measured the volume of hydrogen gas produced over time. The results for magnesium ribbon are shown by curve A on the grid below.

A graph showing the volume of gas produced over time. The y-axis is labeled 'Volume of gas produced in cm³' with scale markings from 0 to 60. The x-axis is labeled 'Time in seconds' with scale markings from 0 to 120. A curve, labeled 'A', starts at the origin (0,0), rises with a moderate steepness, and levels off horizontally at exactly 50 cm³ at 80 seconds, remaining at 50 cm³ up to 120 seconds.

The student repeated the experiment under identical conditions (same temperature, same volume and concentration of acid, and same mass of magnesium) but used magnesium powder instead of magnesium ribbon.

Using this information, draw a line on the grid to show the expected results for the reaction with the magnesium powder.

Label this line B.

[2]

Rates of reaction Questions

  1. GCSE
  2. /Chemistry
  3. /Rates of reaction

Practise Edexcel GCSE Chemistry Rates of reaction with exam-style questions for Foundation and Higher tier. 166 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank