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:

Zn + NaOH - Na2ZnO2 + H2

The test to detect the gas is by bringing a burning candle near it ... if it burns with a pop sound it is Hydrogen

Hydrogen gas evolves when Zinc racts with HCL

Zn + HCL - ZnCl2 + H2

Answer 2

Answer:

Answer

Zn + 2NaOH → Na2ZnO2 + H2

When a burning splinter is brought near the gas, it burns with a Pop Sound.

Gas - Hydrogen / H2