Measuring rate of reaction (practical) Flashcards

1
Q

Formula for rate of reaction

A

Rate of reaction=Amount of reaction used or amount of product formed/Time

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2
Q

How can you test rate of reaction

A

If the reactants are coloured and products are colourless you can time how long it takes for the solution to lose its colour

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3
Q

How can you test for a Change in mass

Usually gas gives off

A
  1. Measure the speed of a reaction that prodcues a gas
  2. As the gas is released, the mass disappearing is measured on the balance
  3. The quicker the reading on the balance drops the faster the reaction
  4. if you take measurements at regular intervals, you can plot a rate of reaction graph
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4
Q

How do you measyre the rate of reaction

The volume of gas given off

A
  1. Involves the use of a gas syringe to measure the volume of gas given off
  2. The more gas given off during a given time interval, the faster the reactiion
  3. Gas syringes usually give volumes accruate to the nearest cm^3
  4. take measurements at regular time intervals and plot a graph
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