Neco 2023 Chemistry Question 4

Practice objective / multiple choice question 4 from the 2023 Neco Chemistry examination.

Neco 2023 Chemistry Objective / Multiple Choice Medium Difficulty

Question 4 NECO • 2023 • CHEMISTRY • objective

Two grams of an unknown non‑volatile liquid are dissolved in 100.0 g of water. The boiling point of the solution is 100.32°C. Given the boiling‑point elevation constant K_b for water is 0.512°C·kg·mol^{-1}, determine the molar mass of the unknown liquid and identify which of the following alcohols (methanol, ethanol, propanol, butanol) matches the calculated molar mass.

A. 46 g·mol^{-1}, ethanol

B. 60 g·mol^{-1}, propanol

C. 74 g·mol^{-1}, butanol

Correct Answer D. 32 g·mol^{-1}, methanol

Correct Answer

Correct Option:

32 g·mol^{-1}, methanol

This is Neco 2023 Chemistry Question 4. It is one of the objective questions from the 2023 Neco Chemistry examination.

Difficulty level: Medium .

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