Chemistry

Explain the following :
Zinc can produce hydrogen on reacting with acids but copper cannot. Explain.

Electrolysis

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Answer

Zinc is more reactive than hydrogen and is placed above hydrogen in the reactivity series, so it displaces hydrogen from acids, but copper is less reactive than hydrogen and is placed below hydrogen in the reactivity series, so it does not liberate hydrogen from acids.

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Chemistry

Explain the following :
Zinc can produce hydrogen on reacting with acids but copper cannot. Explain.

Electrolysis

Answer

Related Questions

Explain the following :
On electrolysis of dilute copper (II) sulphate solution, copper is deposited at the cathode but no hydrogen gas evolves there. Explain why.

Explain the following :
When a dilute aqueous solution of sodium chloride is electrolysed between platinum electrodes, hydrogen gas is evolved at the cathode but metallic sodium is not deposited. Why?

During the electrolysis of molten lead bromide, which of the following takes place ?
Bromine is released at the cathode
Lead is deposited at the anode
Bromine ions gain electrons
Lead is deposited at the cathode

Select the correct answer:
The aqueous solution of the compound which contains both ions and molecules is
A. H₂SO₄
B. HCl
C. HNO₃
D. CH₃COOH

Chemistry

Explain the following :Zinc can produce hydrogen on reacting with acids but copper cannot. Explain.

Electrolysis

Answer

Related Questions

Explain the following :On electrolysis of dilute copper (II) sulphate solution, copper is deposited at the cathode but no hydrogen gas evolves there. Explain why.

Explain the following :When a dilute aqueous solution of sodium chloride is electrolysed between platinum electrodes, hydrogen gas is evolved at the cathode but metallic sodium is not deposited. Why?

During the electrolysis of molten lead bromide, which of the following takes place ?Bromine is released at the cathodeLead is deposited at the anodeBromine ions gain electronsLead is deposited at the cathode

Select the correct answer:The aqueous solution of the compound which contains both ions and molecules isA. H2SO4B. HClC. HNO3D. CH3COOH

Explain the following :
Zinc can produce hydrogen on reacting with acids but copper cannot. Explain.

Explain the following :
On electrolysis of dilute copper (II) sulphate solution, copper is deposited at the cathode but no hydrogen gas evolves there. Explain why.

Explain the following :
When a dilute aqueous solution of sodium chloride is electrolysed between platinum electrodes, hydrogen gas is evolved at the cathode but metallic sodium is not deposited. Why?

During the electrolysis of molten lead bromide, which of the following takes place ?
Bromine is released at the cathode
Lead is deposited at the anode
Bromine ions gain electrons
Lead is deposited at the cathode

Select the correct answer:
The aqueous solution of the compound which contains both ions and molecules is
A. H₂SO₄
B. HCl
C. HNO₃
D. CH₃COOH