Question

2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal
taken in a test tube. When the contents are warmed, a gas evolves which is bubbled
through a soap solution before testing. Write the equation of the chemical reaction
involved and the test to detect the gas. Name the gas which will be evolved when the
same metal reacts with dilute solution of a strong acid.​

Answer 1

Answer:

1.Zn + 2NaOH = Na2ZnO2 + 2H..

2.take a burning flame over the reaction. we will get pop sound.

3. as we heard pop sound it is hydrogen gas that evolves and if it reacts with H2so4 then it will produce hydrogen gas..

hope you get it!!

Answer 2

Answer:

Hydrogen

Explanation:

NaOH + Zn = Na2ZnO2 +H2

pop test is used to detect the presence of H2 gas.

when Zn reacts with HCl it forms H2