A student investigated the energy released by burning various alcohols. They used a spirit burner to heat 150 cm3 of water by 25∘C25^\circ\text{C}25∘C for each fuel.
Table 1 shows some of their results.
Table 1
| Alcohol | Initial mass of spirit burner and alcohol (g) | Final mass of spirit burner and alcohol (g) | Mass of alcohol used (g) |
|---|---|---|---|
| Methanol | 115.80 | 115.12 | 0.68 |
| Ethanol | 134.45 | 133.91 | |
| Propanol | 142.10 | 141.64 | 0.46 |
| Butanol | 158.35 | 157.97 | 0.38 |
Calculate the mass of ethanol used.
Practise Edexcel GCSE Chemistry Heat energy changes in chemical reactions with exam-style questions for Foundation and Higher tier. 130 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
