Igcse Model Questions Vol1 2021 Chemistry Question 21
Practice objective / multiple choice question 21 from the 2021 Igcse Model Questions Vol1 Chemistry examination.
A 150 g sample of substance X is initially at 25 °C. Substance X has a melting point of 120 °C and a boiling point of 250 °C. Its specific heat capacity is 0.5 J g⁻¹ °C⁻¹ in the solid state and 0.8 J g⁻¹ °C⁻¹ in the liquid state. The latent heat of fusion is 60 J g⁻¹ and the latent heat of vaporisation is 200 J g⁻¹. The sample is supplied with 45 000 J of energy. Assuming no heat loss, determine (a) the mass of X that has been vapourised and (b) the temperature of the remaining liquid.
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About This Question
This is Igcse Model Questions Vol1 2021 Chemistry Question 21. It is one of the objective questions from the 2021 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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