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2 marksMole Concept

CSEC Chemistry · January 2021 · Paper 2 · Question 6(b)

Write an ionic equation for the reaction of magnesium with dilute hydrochloric acid.

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  1. 6(a)(i)Describe a test that could be used to identify the gaseous product formed.[2 marks]
  2. 6(a)(ii)A sample of the gas was collected by downward delivery. State the physical property of the gas which supports this method of collection.[1 mark]
  3. 6(a)(iii)Write a chemical equation, including state symbols, for the reaction between hydrochloric acid and sodium hydrogen carbonate.[2 marks]
  4. 6(c)(i)Some farmers use ammonium sulfate fertilizers in the presence of a base. Explain why this is NOT a good practice.[3 marks]
  5. 6(c)(ii)List TWO uses of silicon and ONE use of phosphorus.[3 marks]
  6. 6(c)(iii)Sulfur burns in air to produce a gas that dissolves in water to give a colourless solution. Identify the gas formed and state the effect that the solution…[2 marks]

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