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Heat energy changes in chemical reactions

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Question 23

The apparatus shown in the diagram can be used to investigate the temperature rise produced in a known volume of water when a sample of paraffin wax is burned.

Apparatus for determining the heat energy change during the combustion of paraffin wax.

The first steps of the method are:

  1. Place 120 cm3 of water into a copper calorimeter can.
  2. Measure and record the initial mass of the paraffin candle and its watch glass support.
  3. Measure and record the starting temperature of the water.
  4. Position the candle under the copper can and light the wick.

Describe the remaining steps of the method that are needed to determine the mass of paraffin wax required to raise the temperature of the water by 15 ∘C15\text{ }^\circ\text{C}15 ∘C.

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Heat energy changes in chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /Heat energy changes in chemical reactions

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