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2 marksForces of Attraction

CAPE Chemistry Unit 1 · 2012 · Paper 2 · Question 1(a)

Intermolecular forces of attraction influence the physical properties of substances, such as, their melting points, boiling points, and solubility in polar and non-polar solvents.

With the aid of an example, define the term 'dative (co-ordinate) covalent bond'.

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  1. 1(b)(i)Place substances A, B and C in order of increasing boiling point (lowest boiling point first).[1 mark]
  2. 1(b)(ii)Identify the intermolecular attractive forces found in EACH of the substances in (b) (i) above.[3 marks]
  3. 1(b)(iii)Describe the origin of TWO of the intermolecular attractive forces named in (b) (ii).[4 marks]
  4. 1(c)Complete Table 1 by indicating whether EACH of the substances, potassium bromide, acetone and solid iodine are soluble or insoluble in the two solvents, water…[5 marks]

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