question_answer

   (a) With the help of a labelled diagram demonstrate an experiment to show the reaction between sodium carbonate and dilute hydrochloric acid.   (b) Name the gas evolved. (c) Suggest the test for the gas evolved. (d) Write equation of the chemical reactions involved.

Answer:

                  (a) (b) Carbon dioxide gas is evolved during the  reaction.                                                              (1) (c) Gas is tested by passing it through lime water which turns milky due to the formation of                                                          (1) (d) The balanced chemical reactions are as follows