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Measuring effect of temperature on rate

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Credit

RHYS LEWIS, AHS, DECD, UNISA / JON BAUGH / SCIENCE PHOTO LIBRARY RHYS LEWIS, AHS, DECD, UNISA / JON BAUGH / SCIENCE PHOTO LIBRARY

Caption

Graph of an experiment used to measure the effect of temperature on the rate of a chemical reaction. The reaction is a colourless transparent mixture of sodium thiosulfate and hydrochloric acid solutions. Over time, the acid attacks the thiosulfate, forming solid sulfur, which precipitates from solution and gradually makes it more opaque. In this experiment, the reaction was performed at a range of temperatures, and the time taken for the solution to turn opaque was recorded. The y axis shows this time, and the x axis shows the temperature of the reaction. Reactions proceed more quickly at higher temperatures because the reacting ions move more quickly and collide more often, and more of them have the energy required to break chemical bonds.

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  • Duration: 00:00:15.01
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  • Capture Format: QuickTime Animation
  • Codec: Animation

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