What happens when zinc granules are treated with dilute solutions of

Monjur Alahi

What happens when zinc granules are treated with dilute solutions of H2SO4, HCl, HNO3, NaCl and NaOH ? Also write the chemical equation


0 like 0 dislike
1 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

(i) With dil. H2SO4 : H2 gas is evolved.
Zn + H2SO4 → ZnSO4 + H2↑
ii) With dilute HCl : H2 gas is evolved.
Zn + HCl → ZnCl2 + H2 ↑
(iii) With dilute HNO3 : H2 gas is evolved.
Zn + 2HNO3 → Zn(NO3)2+ H2O + H2 ↑

(iv) With dilute NaCl : No chemical reaction takes place.
(v) With dilute NaOH : Sodium zincate is formed and H2 gas is evolved.
Zn + 2NaOH → Na2ZnO2 + H2 ↑

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
Food cans are coated with tin and not with zinc because (a) zinc is costlier than tin.

(c) Food cans are coated with tin and not with zinc because zinc is more reactive than tin.

1 Answers 1 views
Which gas is produced when dilute hydrochloric acid is added to a reactive metal? Write the chemical reaction when iron reacts with dilute H2SO4.

When reactive metals react with dilute hydrochloric acids, gives a salt and hydrogen gas Metal + Dilute acid → Salt + Hydrogen Reaction between Iron and H2SO4: Fe + H2SO4 → FeSO4 +...

1 Answers 1 views
What happens when a. Dilute sulphuric acid is poured on a copper plate? b. Iron nails are placed in copper sulphate solution?

(a) When dilute sulphuric acid is poured on a copper plate, there will be evolution of hydrogen gas along with the formation of blue color crystals of copper sulphate.  CuSO4 +...

1 Answers 1 views
What happens when dilute hydrochloric acid is added to iron filings? Choose the correct

The following reaction takes place:    Fe  +      2HCl         ----->      FeCl2       +      H2 Iron     Hydrochloric acid     lron chloride   Hydrogen Thus, hydrogen and iron chloride are produced. Therefore, (a) is the correct answer.​

1 Answers 1 views
Zinc liberates hydrogen gas when reacted with dilute hydrochloric acid,whereas copper does not. Explain why?

Zinc is above hydrogen rvhereas copper is below hydrogen in the activity series of metals. That is why zinc displaces hydrogen from dilute hydrochloric acid, while copper does not.    ...

1 Answers 1 views
When zinc metal is treated with a dilute solution of a strong acid,

When zinc reacts with dilute solution of strong acid, it forms salt and hydrogen gas is evolved. Zn + 2HCl ------> 2nCl2 + H2 When a burning splinter is brought near the mouth...

1 Answers 1 views
Zinc liberates hydrogen gas when reacted with dilute hydrochloric acid, whereas copper does not. Explain why,

Zinc liberates hydrogen gas when reacted with dilute hydrochloric acid because zinc is more reactive than hydrogen. However, copper does not liberate hydrogen gas when reacted with dilute hydrochloric acid...

1 Answers 1 views
In a test-tube, hydrochloric acid is poured over a few zinc granules.

i.   Temperature of test tube increases. ii.    Acolourless gas is evolved.

1 Answers 1 views
When a student added zinc granules to dilute HCl,

When the colourless gas was tested with a burning matchstick, the matchstick extinguished and the gas burnt with a pop sound. This is because when zinc granules are added to...

1 Answers 1 views
Give reason for the following: Zinc is not precipitated as Zn (OH)2 on adding NH4 OH to a zinc salt solution containing NH4Cl.

NH4CL suppresses the ionization of NH4OH due to common ion effect. Hence, the concentration of OH- decreases such that the ionic product [Zn2+] [OH-]2 does not exceed solubility product. Hence,...

1 Answers 2 views
X