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3 marksKinetic Theory

CAPE Chemistry Unit 1 · 2008 · Paper 2 · Question 4(a)

This section covers fundamentals in chemistry, including the kinetic theory of gases and the ideal gas equation. It also involves calculations related to organic compounds.

List THREE assumptions made about gas molecules in the kinetic theory.

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  1. 4(b)(i)State the TWO conditions under which the ideal gas equation adequately describes the behaviour of gases.[2 marks]
  2. 4(b)(ii)Carefully explain the deviations produced by real gases.[3 marks]
  3. 4(c)Sketch a graph of volume (V) against the inverse of pressure (1/P) for a constant number of moles of an ideal gas at constant temperature.[1 mark]
  4. 4(d)(i)An organic compound, Y, contains carbon, hydrogen and oxygen only. When vapourised at 101 kPa and 373 K, 1.00 g of Y occupies a volume of 667 cm³. Calculate…[4 marks]
  5. 4(d)(ii)On combustion in excess oxygen, 1 mole of Y produces carbon dioxide and water in the mole ratio 2:3. Deduce the formula of Y.[2 marks]

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