Neco 2022 Chemistry Question 6

Practice essay / theory question 6 from the 2022 Neco Chemistry examination. This question covers States of Matter .

Neco 2022 Chemistry Essay / Theory

Topic: States of Matter

Question 6 NECO • 2022 • CHEMISTRY • essay

A 0.500 g sample of an unknown non‑volatile solute is dissolved in 100.0 cm³ of water at 25 °C. The freezing point of the solution is observed to be –0.465 °C. Answer the following: (a) Calculate the molar mass of the unknown solute. (b) Explain qualitatively how an increase in external pressure would affect the boiling point of pure water. (c) Discuss why most solid substances expand on heating, relating your answer to the nature of intermolecular forces.

( a )

Calculate the molar mass of the unknown solute.

( b )

Explain qualitatively how an increase in external pressure would affect the boiling point of pure water.

( c )

Discuss why most solid substances expand on heating, relating your answer to the nature of intermolecular forces.

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This is Neco 2022 Chemistry Question 6. It is one of the essay questions from the 2022 Neco Chemistry examination.

The question covers States of Matter .

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