Neco 2017 Chemistry Question 17

Practice objective / multiple choice question 17 from the 2017 Neco Chemistry examination.

Neco 2017 Chemistry Objective / Multiple Choice Medium Difficulty

Question 17 NECO • 2017 • CHEMISTRY • objective

500 g of a non‑volatile solute are dissolved in 500 g of benzene (\(K_b = 5.2\ \text{K·kg·mol}^{-1}\)). At \(25^{\circ}\text{C}\) the vapor pressure of pure benzene is \(1.00\ \text{atm}\) while that of the solution is \(0.85\ \text{atm}\). Determine the molar mass of the solute.

Correct Answer A. 177 g·mol^{-1}

B. 150 g·mol^{-1}

C. 250 g·mol^{-1}

D. 200 g·mol^{-1}

Correct Answer

Correct Option:

177 g·mol^{-1}

This is Neco 2017 Chemistry Question 17. It is one of the objective questions from the 2017 Neco Chemistry examination.

Difficulty level: Medium .

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