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प्रश्न
How did the name ‘hydrogen’ originate? How does hydrogen occur in the combined state?
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उत्तर
At first, hydrogen was referred to as an "inflammable gas." It burned in the atmosphere, creating water. Lavoisier gave it the name "hydrogen," which means "water producer," in 1783. [Greek word Hydro = water, gen = producer]
Hydrogen occurs in the combined state:
- Compounds containing hydrogen, along with carbon, oxygen, and nitrogen, make up plant and animal tissues.
- Hydrogen makes up around one-ninth of the mass of water.
- as an ingredient in various substances, such as organic compounds, petroleum products, acids, and alkalis.
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संबंधित प्रश्न
How do different metals displace hydrogen from water? Explain with the help of equations.
Which metal is preferred for the preparation of hydrogen?
from water?
Complete and balance the following reaction.
Al + H2SO4 →_____________ +___________
Complete and balance the following reaction.
Al + KOH + H2O→_____________ +___________
Complete and balance the equation:
[General method]
Reactions of active metals - cold water
Potassium- K + H2O → ______+ ______ [g]
Complete and balance the equation:
[General method]
Reactions of metals with steam
Zinc - Zn + H2O → ______+ _______ [g]
Complete and balance the equation:
[Industrial Method - Bosch process]
- Step I - Production of water gas -
\[\ce{C + H2O->[1000°C]}\] [____ + ____] - Δ - Step II - Reduction of steam to hydrogen by carbon monoxide
\[\ce{CO + H2 + H2O->[450°C][Fe2O3]}\] _____ + ____ [g] - Step III - Removal of unreacted carbon dioxide and carbon monoxidefrom the above mixture
KOH + CO2 → _________ + ______
CuCl + CO + 2H2O → _______
State the electronic configuration of hydrogen [at. no. 1].e
Give a reason why hydrogen can be placed in group 1 [1A] and group 17 [VIIA] of the periodic table.
State why hydrogen is not prepared in the laboratory by the action of sodium with cold water.
Give a balanced equation for the following conversion.
\[\ce{NH3<-H2->H2S}\]
