Waec Model Questions Vol1 2021 Chemistry Question 6
Practice essay / theory question 6 from the 2021 Waec Model Questions Vol1 Chemistry examination. This question covers States of Matter, Phase changes, Enthalpy, Specific heat .
Water undergoes several phase changes under standard atmospheric pressure (1 atm). The following data are given: • Specific heat capacity of ice, c₁ = 2.09 J g⁻¹ K⁻¹ (for –10 °C to 0 °C) • Specific heat capacity of liquid water, c₂ = 4.18 J g⁻¹ K⁻¹ (for 0 °C to 100 °C) • Specific heat capacity of steam, c₃ = 2.01 J g⁻¹ K⁻¹ (for 100 °C to 120 °C) • Enthalpy of fusion of water, ΔH_fus = 334 J g⁻¹ • Enthalpy of vaporisation of water, ΔH_vap = 2260 J g⁻¹ A sample of 150.0 g of ice at –10 °C is heated until it becomes steam at 120 °C. Answer the following questions:
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This is Waec Model Questions Vol1 2021 Chemistry Question 6. It is one of the essay questions from the 2021 Waec Model Questions Vol1 Chemistry examination.
The question covers States of Matter, Phase changes, Enthalpy, Specific heat .
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