Question

2 ml of sodium hydroxide solution is added to few piece of granulated zinc metal taken in a test tube when the content are warmed a gas evolves which is bubbled route or soap solution before testing write the the equation of the chemical reaction evolved and the test to detect the gas name the gas which will be evolved when the same metal react with dilute solution of a strong acid​

Answer 1

Answer:

Zn reacts with NaOH to form a coordination compound called sodium zincate with evolution of H2 gas.

When sodium hydroxide is heated with Zinc granules - Sodium Zincate and hydrogen gas is evolved.

2NaOH(aq)+Zn(s)→Na2ZnO2(aq)+H2(g)↑

When burning splinter is brought near the mouth of the test tube, it burns with a pop sound. If Zinc granules react with strong; acids (HCl or H2SO4) then again Hydrogen gas will be evolved.

Zn(s)+(dil)2HCl→ZnCl2+H2↑

Zn(s)+(dil)H2SO4→ZnSO4+H2↑

hope this will help you.