Question

a student added dilute HCl to the test tube containing zinc granules. Write the two main observations after the reaction takes place . What will be the colour of surface of zinc after the reaction?

Answer 1

ANSWER----

◆ When Metal react with acid to give salt and hydrogen gas.

Metal + Acid ---- Salt + Hydrogen gas

◆ Hydrogen gas will release or not we will check with the help of popping sound.

◆ When Zinc (Zn) metal added in Hydrochloride acid HCl.

Equation = Zn + 2HCl --- ZnCl2 + H2

Zn = Zinc
HCl = Hydrochloride
ZnCl= Zinc Chlorine
H2 = Hydrogen gas

◆ in this above reaction ZnSO4 is salt.

◆ Now we will check hydrogen gas will release or not. When a burning candle near the solution so pop sound we listen so hydrogen gas is released.


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Answer 2

Answer:

Explanation:

ANSWER----

◆ When Metal react with acid to give salt and hydrogen gas.

Metal + Acid ---- Salt + Hydrogen gas

◆ Hydrogen gas will release or not we will check with the help of popping sound.

◆ When Zinc (Zn) metal added in Hydrochloride acid HCl.

Equation = Zn + 2HCl --- ZnCl2 + H2

Zn = Zinc

HCl = Hydrochloride

ZnCl= Zinc Chlorine

H2 = Hydrogen gas

◆ in this above reaction ZnSO4 is salt.

◆ Now we will check hydrogen gas will release or not. When a burning candle near the solution so pop sound we listen so hydrogen gas is released.

HOPE ITS HELP YOU.....

ANY DOUBTS YOU CAN ASK....

THANK YOU....