question_answer

                 Iqbal treated a lustrous, divalent element M with sodium hydroxide. He observed the formation of bubbles in reaction  mixture. He made the same observations  when this element was treated with  hydrochloric acid. Suggest how can he identify the produced gas? Write the chemical equations for both the reactions.

Answer:

                  The produced gas can be identified by bringing a burning splinter near the gas (mouth of the reaction vessel). The gas burns with pop sound, hence it is hydrogen.                                                          (1) Reactions