Question

2 ml of sodium hydroxide solution is added to a few pieces ofgranulated zinc metal taken in a test tube. When the contents arewarmed, a gas evolves which is bubbled through a soap solutionbefore testing. Write the equation of the chemical reaction involvedand the test to detect the gas. Name the gas which will bevolvedwhen the same metal reacts with dilute solution of a

Answer 1

NaOH+Zn=Na2ZnO2+H2

Hydrogen can be detected by bringing a splinter burning which will make a pop sound.

Hydrogen will be evolved when sodium reacts with dil acid.

Hope it helps you