Chemistry
Give reasons for the following:
Nitric acid in the dilute form is not used in the laboratory preparation of hydrogen from metals.
Hydrogen
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Answer
Nitric acid is a strong Oxidizing agent and nascent oxygen formed on it's decomposition oxidizes the hydrogen to water. Hence, nitric acid in the dilute form is not used in the laboratory preparation of hydrogen from metals.
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Related Questions
Select from A to G the reactant added, to give the products 1 to 5, in the preparation of hydrogen gas.
A : dilute acid
B : dilute alkali
C : cold water
D : conc. alkali
E : boiling water
F : conc. acid
G : steam- Ca(OH)2 + H2
- MgO + H2
- Fe3O4 + H2
- Al2(SO4)3 + H2
- NaAlO2 + H2
Give balanced equations for the following conversions, 1 to 5.
- MgCl2 ⟵ HCl ⟶ FeCl2
- KAlO2 ⟵ KOH ⟶ K2ZnO2
- ZnO ⟵ H2O ⟶ Fe3O4
- CO + H2 ⟵ H2O ⟶ CO2 + H2
- NH3 ⟵ H2 ⟶ H2S
Give reasons for the following:
Granulated zinc is preferred to metallic zinc in the preparation of hydrogen using dilute acid.
Give reasons for the following:
Hydrogen and alkali metals of group 1 [IA] react with copper [II] oxide to give copper.