Neco Model Questions Vol1 2021 Chemistry Question 47
Practice objective / multiple choice question 47 from the 2021 Neco Model Questions Vol1 Chemistry examination.
A solution is prepared by dissolving 5.00 g of a non‑volatile solute in 250 g of water. The observed boiling‑point elevation is \(0.78^{\circ}\text{C}\) and the freezing‑point depression is \(0.45^{\circ}\text{C}\). Given \(K_{\text{b}} = 0.512^{\circ}\text{C·kg mol}^{-1}\) and \(K_{\text{f}} = 1.86^{\circ}\text{C·kg mol}^{-1}\), which colligative measurement should be used to calculate the molar mass of the solute, and what is the molar mass based on that measurement?
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About This Question
This is Neco Model Questions Vol1 2021 Chemistry Question 47. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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