Appropriate equipment for measuring the rate of a reaction
I can suggest appropriate equipment to measure the rate of reaction depending on the reaction.
- Year 11
- AQA
Appropriate equipment for measuring the rate of a reaction
I can suggest appropriate equipment to measure the rate of reaction depending on the reaction.
Lesson details
Key learning points
- Choosing the correct equipment is crucial for obtaining accurate and reliable results.
- An upturned measuring cylinder is suitable for reactions producing large volumes of gas at moderate rates.
- Gas syringes are ideal for measuring small volumes of gas with high precision.
- The size of the measuring equipment should be close to the expected volume of gas produced.
- Light sensors can be used to measure the percentage of light transmitted through a reaction producing a precipitate.
Keywords
Rate of reaction - Rate of reaction is the speed with which a chemical reaction takes place, measured by the amount of a reactant used or amount of product formed in a given time.
Volume - Volume is how much 3D space matter occupies. It is usually measured in cm³.
Accurate - Accurate measurements are those that are close to the true value.
Precise - Precise measurements have very little spread from the mean value. They are values that lie close to each other.
Common misconception
Thinking that precise and accurate are the same thing.
It may help to draw a bullseye target board. Precise results will all be close to each other but may not be near the bullseye. Accurate results will be near the bullseye but may be more scattered if they are not precise.
Equipment
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.If a reaction effervescences, what does this tell us about the state of one of the products made?
Q2.If a product in a chemical reaction is a gas, how can we measure the volume of gas produced in a given time?
Q3.When a chemical reaction takes place in a closed system, which of the following may be observed?
Q4.How can we calculate the rate of reaction?
Q5.Match the key terms to the correct definition.
