Igcse Model Questions Vol1 2023 Chemistry Question 35
Practice objective / multiple choice question 35 from the 2023 Igcse Model Questions Vol1 Chemistry examination.
The solubility of potassium nitrate (KNO_{3}) in water is 31.6 g per 100 g water at 20 °C and 56.0 g per 100 g water at 60 °C. Assuming the enthalpy of solution is constant over this temperature range, (i) calculate the enthalpy change of solution \Delta H_{sol} (in kJ mol^{-1}, to two significant figures). (ii) Estimate the solubility at 80 °C (in g per 100 g water, to two significant figures) using the van't Hoff equation.
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About This Question
This is Igcse Model Questions Vol1 2023 Chemistry Question 35. It is one of the objective questions from the 2023 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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