Light Transmission through a Precipitate

Niamh Ryan
Flowchart by Niamh Ryan, updated more than 1 year ago
Niamh Ryan
Created by Niamh Ryan over 3 years ago
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Description

This illustration is part of the series on Rate of Reaction Chemistry course. It shows the steps for capturing light transmission through a precipitate, which is a common Chemistry test requirement.

Resource summary

Flowchart nodes

  • Light shield
  • Sodium thiosulfate and hydrochloric acid react in conical flask
  • The transmission of light through the reaction mixture is measured using a datalogger and light sensor
  • As the sulfur precipitate gradually forms, the solution becomes cloudier
  • The amount of light transmitted is a measurement of the reaction's progression
  • Measure and record the time taken for the light intensity to drop to a minimum value
  • Calculate the rate of reaction by calculating 1/reaction time
  • Light source transmits light through reaction mixture
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