Refer to the experimental procedure and the table provided. (a) Complete filling the table. (b) Why mark X disappeared in this experiment? (c) (i) Indicating the states of the reactants and the products, write a balanced chemical equation for the reaction between AA and BB (ii) Write the corresponding ionic equation for the reaction between AA and BB. (d) Plot a graph of volume of AA (cm3 ) against 1/time (S-1). Explain the shape of your graph. (e) How would the rate of reaction vary if the concentration of BB is increased while the concentration of AA is kept constant? Explain. (f) What does the value 1/time an?

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Sample Z is a simple salt containing one cation and one anion. Carefully, carry out qualitative analysis experiment to identify the ions present in the salt based on the following tests: (a) Appearance of the sample. (b) Action of heat on the sample. (c) Action of concentrated sulphuric acid on the sample. (d) Solubility. (e) Action of aqueous sodium hydroxide on solution of sample Z. (f) Flame test on sample Z. (g) Action of dilute nitric acid on solution of sample Z followed by silver nitrate solution. Qestions: (i) Prepare a relevant Table showing the qualitative analysis results. (ii) Write the reaction equation for the test at experiment (c). (iii) Write the electronic configuration of the cation in sample Z. (iv) How is Z prepared in the laboratory? Support your answer with chemical reaction. (v) What are the two uses of sample Z? Briefly, explain.

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