Advertisements
Advertisements
प्रश्न
Complete and balance the following reaction.
Al + KOH + H2O→_____________ +___________
Advertisements
उत्तर
2Al + 2KOH + 2H2O →2KAlO2 + 3H2
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Hydrogen reacts with metal oxides to form ............and....................
Give reason for the following:
Though hydrogen is lighter than air it cannot be collected by downward displacement of air.
Hydrogen gas is collected by the downward displacement of water. Give reason ?
What is noticed if the products are not allowed to escape?
Why are the following metals not used in the lab preparation of hydrogen?
calcium
Starting from hydrogen gas how would you obtain a neutral liquid.
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Zinc - Zn + 2NaOH → ______ + _______ [g]
Zn + 2KOH → ____ + _____ [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 → _______
Account for the following fact:
Potassium and sodium are not used to react with dilute ‘hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.
State the reactant added to hydrogen to obtain the respective product in following case.
Water
