Waec Model Questions Vol1 2022 Chemistry Question 11
Practice objective / multiple choice question 11 from the 2022 Waec Model Questions Vol1 Chemistry examination.
A 150 g sample of a substance is initially a solid at 20 °C. Its specific heat capacities are 2.0 J g⁻¹ °C⁻¹ (solid), 1.5 J g⁻¹ °C⁻¹ (liquid) and 1.0 J g⁻¹ °C⁻¹ (vapour). The melting point is 80 °C with a latent heat of fusion of 60 J g⁻¹, and the boiling point is 150 °C with a latent heat of vaporisation of 200 J g⁻¹. If 90 000 J of heat are supplied to the sample, state the final physical state of the substance and its temperature.
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About This Question
This is Waec Model Questions Vol1 2022 Chemistry Question 11. It is one of the objective questions from the 2022 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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