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CSEC Chemistry · January 2007 · Paper 2 · Question 5(b)

5.0 g of CaCO3 is allowed to react completely with hydrochloric acid. Using the balanced equation in (a), calculate the mass of gas that would be produced. [Relative Atomic Mass: Ca = 40, O = 16, C = 12]

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Other parts of this question

  1. 5(a)Write a balanced equation for the reaction between hydrochloric acid and limestone.[2 marks]
  2. 5(c)Suggest ONE way to verify the identity of the gas given off in (a).[1 mark]
  3. 5(d)(i)What data must be collected if one wants to measure the rate of the reaction in (a) on page 14?[2 marks]
  4. 5(d)(ii)Sketch a labelled diagram to illustrate how the data collected in (d) (i) above may be represented.[3 marks]
  5. 5(e)(i)State TWO ways in which the rate of a reaction could be increased.[2 marks]
  6. 5(e)(ii)Explain how ONE of the ways stated in (e) (i) above causes an increase in reaction rate.[2 marks]

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