Question

a boy 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.

Answer 1

✔✔It's a devalent element and lustrous so it is a metal
✔Second thing only very reactive metals react with sodium hydroxide sodium hydroxide
✔Very reactive metals react with sodium hydroxide to give hydrogen gas
Now he can identify it by bringing A burning candle .He would see that Gas burns with a pop sound.
so the possible metals r calcium and magnesium and zinc and many more

Now the reaction could be
ca +Na OH ------------>salt + hydrogen
mg+ NaOH ----------> salt + hydrogen
Zn + NaOH -----------> salt +hydrogen
When they react with hcl they give their respective chlorides with H2 gas

Hope it'll help
plz plz mark my answer as brainliest..........

Answer 2

Answer:

please Mark me as brainlist.