preparation of Hydrogen
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Preparation of Hydrogen
Hydrogen gas is prepared in the laboratory by the action of dilute hydrochloric acid or dilute sulphuric acid on granulated zinc.
Zn + 2HCL → ZnCL₂ + H₂↑
Zn + H2SO₄ → ZnSO₄ + H₂↑
Granulated zinc is commercial zinc obtained from molten zinc. It contains impurities like copper which have a slight catalytic effect on the reaction and speeds up the reaction.
Hydrogen gas is prepared in the laboratory by the action of dilute hydrochloric acid or dilute sulphuric acid on granulated zinc.
Zn + 2HCL → ZnCL₂ + H₂↑
Zn + H2SO₄ → ZnSO₄ + H₂↑
Granulated zinc is commercial zinc obtained from molten zinc. It contains impurities like copper which have a slight catalytic effect on the reaction and speeds up the reaction.
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Before collecting hydrogen gas great care must be taken to ensure that all the air has been displaced from the apparatus since a mixture of hydrogen with air is highly explosive.
PREPARATION OF HYDROGEN GAS IN LABORATORY
PREPARATION OF HYDROGEN GAS IN LABORATORY
Hydrogen is prepared in the lab by the action of acids on metal’s dilute.
Zn+H2SO4——> ZnSO4+H2
Zn+ 2HCl—–>ZnCl2+H2
Sulphuric acid is added to granulated zinc. Zinc sulphate or zinc chloride is formed in solution and the hydrogen that is evolved is collected over water in a trough.
Hope This helps
Thanks for asking questions
Before collecting hydrogen gas great care must be taken to ensure that all the air has been displaced from the apparatus since a mixture of hydrogen with air is highly explosive.
PREPARATION OF HYDROGEN GAS IN LABORATORY
PREPARATION OF HYDROGEN GAS IN LABORATORY
Hydrogen is prepared in the lab by the action of acids on metal’s dilute.
Zn+H2SO4——> ZnSO4+H2
Zn+ 2HCl—–>ZnCl2+H2
Sulphuric acid is added to granulated zinc. Zinc sulphate or zinc chloride is formed in solution and the hydrogen that is evolved is collected over water in a trough.
Hope This helps
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