Skip to content
MathsGenie logo
Quick links
Open app

Course home

  1. GCSE
  3. Chemistry Edexcel
  5. Question bank

Heat energy changes in chemical reactions

EasyMedium
1234567891011121314151617181920212223242526272829303132
Question 17

A student wants to investigate the energy released when different alcohols are burned.

Figure 1 shows the apparatus available in the laboratory. Figure 2 shows a bar chart of the typical results obtained, representing the temperature increase of water per gram of fuel burned for four different alcohols.

Figure 1: Schematic of the experimental setup showing a copper can (calorimeter) containing water, held in place by a clamp stand over a spirit burner on a heatproof mat. A thermometer is resting inside the copper can. Next to this setup are a measuring cylinder and a digital balance.

Figure 2: A bar chart illustrating the temperature change per gram of fuel burned in °C/g. Four alcohols are on the x-axis: methanol, ethanol, propanol, and butanol. The height of the bars increases from methanol to butanol, showing that butanol produces the highest temperature increase per gram of fuel burned.

Describe an experimental method, using the apparatus in Figure 1, to obtain results that allow a comparison of the energy released per gram by these different alcohols.

[6]

Heat energy changes in chemical reactions Questions

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

Question bank