Rates Of Reaction - GCSE Science Required Practical


Summary

This video delves into measuring the rate of a chemical reaction using the sodium thiosulfate and hydrochloric acid reaction as an example. It showcases how the color change from clear to yellow signifies the formation of sulfur, and demonstrates how altering concentrations affects reaction rates. By observing the disappearance of a cross marker and exploring the impact of dilution on reaction rates, viewers gain insights into the relationship between concentration, particle collisions, and reaction time. The video also emphasizes the importance of plotting graphs to analyze the correlation between different concentrations and reaction times.


Introduction to Chemical Reaction Rate Measurement

In this video, we will explore how to measure the rate of a chemical reaction, specifically focusing on the reaction between sodium thiosulfate and hydrochloric acid.

Observing Color Change in Reaction

The reaction between sodium thiosulfate and hydrochloric acid results in a color change from clear and colorless to a yellow cloudy color, indicating the formation of sulfur.

Measuring Initial Solution Concentrations

Measuring out specific concentrations of sodium thiosulfate and hydrochloric acid to observe their effects on the reaction rate and the disappearance of a cross marker.

Effect of Diluting Sodium Thiosulfate Concentration

Exploring the impact of diluting the sodium thiosulfate concentration on the rate of reaction, highlighting the relationship between particle collisions and reaction rate.

Analyzing Different Concentrations

Comparing reaction rates at different concentrations of sodium thiosulfate to determine the relationship between concentration and reaction time, leading to plotting a graph for analysis.

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