Neco Model Questions Vol1 2018 Chemistry Question 6

Practice essay / theory question 6 from the 2018 Neco Model Questions Vol1 Chemistry examination. This question covers States of Matter .

Neco Model Questions Vol1 2018 Chemistry Essay / Theory

Topic: States of Matter

Question 6 NECO_MODEL_QUESTIONS_VOL1 • 2018 • CHEMISTRY • essay

A 0.500 mol sample of an unknown volatile liquid is placed in a 1.00 L sealed container at 298 K. The vapour pressure of the liquid at this temperature is 0.35 atm.

Question Parts

( a )

Calculate the fraction of the substance that exists as vapour in the container at equilibrium.

( b )

The liquid is heated to 350 K. Using the Clausius–Clapeyron relation ln(P2/P1) = –ΔHvap/R (1/T2 – 1/T1) and ΔHvap = 30.0 kJ mol⁻¹, calculate the new vapour pressure at 350 K.

( c )

Assuming the container volume remains 1.00 L, determine the total pressure in the container after heating and comment on whether the pressure exceeds the safety limit of 1.5 atm.

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About This Question

This is Neco Model Questions Vol1 2018 Chemistry Question 6. It is one of the essay questions from the 2018 Neco Model Questions Vol1 Chemistry examination.

The question covers States of Matter .

View More Neco Model Questions Vol1 2018 Chemistry Questions More Neco Model Questions Vol1 Practice Questions Back to Questions

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