Quelpr

CSEC Chemistry · January 2009 · Paper 2 · Question 1(c)

Tests were performed on an aqueous solution of Compound R, and observations are in Table 2. Inferences and ionic equations are required for each reaction.

A number of tests were carried out on an aqueous solution of Compound R. The observations obtained are recorded in Table 2. Write suitable inferences and ionic equations for EACH reaction in the spaces provided.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 1(a)(i)Explain the effect of increasing the concentration of the reactants on the rate of a chemical reaction.[2 marks]
  2. 1(a)(ii)Write a balanced equation for the reaction between magnesium and hydrochloric acid.[2 marks]
  3. 1(a)(iii)Calculate the mass of magnesium that will COMPLETELY react with 50 cm³ of 1.5 mol dm⁻³ HCl. (Relative atomic mass of Mg = 24; H = 1; Cl = 35.5)[3 marks]
  4. 1(a)(iv)Describe how you would prepare 50 cm³ of different concentrations of hydrochloric acid from the solution of 1.5 mol dm⁻³ hydrochloric acid provided.[3 marks]
  5. 1(a)(v)Figure 1 shows a series of diagrams that represents how the students set up the experiment to determine the effect of the concentration of acid on the rate of…[3 marks]
  6. 1(b)(i)Plot the TOTAL volume of oxygen given off against time, on the graph paper on page 7.[3 marks]
  7. 1(b)(ii)Account for the shape of the graph obtained.[2 marks]
  8. 1(b)(iii)From your graph determine the volume of oxygen gas produced after 50 seconds.[1 mark]

More practice: the rest of this paper · more Qualitative Analysis questions · all CSEC Chemistry past papers