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2 marksPeriod 3: Sodium to Argon

CAPE Chemistry Unit 1 · 2016 · Paper 2 · Question 3(c)(i)

Write equations to show what happens when EACH of the following chlorides reacts with water: SiCl₄

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  1. 3(a)(i)Explain, in terms of structure and bonding, why aluminium has a higher melting point than sodium[2 marks]
  2. 3(a)(ii)Explain, in terms of structure and bonding, why silicon has the highest melting point in the period[2 marks]
  3. 3(a)(iii)Explain, in terms of structure and bonding, why sulfur melts at a higher temperature than phosphorous.[3 marks]
  4. 3(b)(i)Complete Table 2 by describing the reaction of EACH oxide with water and suggesting a pH value for the resulting liquid.[2 marks]
  5. 3(b)(ii)Write the equation which represents the reaction of water with P₄O₁₀.[2 marks]
  6. 3(c)(ii)Write equations to show what happens when EACH of the following chlorides reacts with water: AlCl₃[2 marks]

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