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Iqbal treated a lustrous, divalent element M with sodium hydroxide. He observed the formation of bubbles in reaction mixture.

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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 chemical equations for both the reactions.

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Divalent element M is Zinc.

Zn + 2NaOH → Na2ZnO2 + H2

Zn + 2HCl(dil) → ZnCl2+ H2

Hydrogen gas burns with a pop sound.

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