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प्रश्न
Complete and balance the equation:
[General method]
Reactions of active metals - cold water
Calcium - Ca + H2O → ______+ _______ [g]
उत्तर
Calcium - Ca + 2H2O → Ca[OH]2 + H2 [g]
APPEARS IN
संबंधित प्रश्न
Name the following:
Two metals which give hydrogen with cold water.
Multiple Choice Question
The metal which reacts with cold water to produce hydrogen is
TRUE \ FALSE
reacts with hot water to form copper oxide and hydrogen.
MATCH THE COLUMNS
| column A | column B |
| 1. `""2H_2 + O_2 → 2H_2O` | A. This reaction is not possible |
| 2. `""H_2+CI_2 →2HCI` | B.This reaction is exothermic to the extent of explosion |
| 3.`""ZaO+ H^2→Zn +H_2O` | C.This reaction is known as Haber process |
| 4.`""Cu + H_2SO^4 → CuSO_4 + H_2 ` | D.This reaction illustrates the reducing property of bydrogen |
| 5.`""N_2 +3H_2 → 2NH_3 +heat ` | E. This reaction takes place in diffused sunlight |
| F. This reaction is a method of preparation of hydrogen |
Which metal is preferred for the preparation of hydrogen?
from water?
Give reason for the following:
The end of the thistle funnel should be dipped under acid.
Why are the following metals not used in the lab. preparation of hydrogen?
sodium
Complete and balance the following reaction.
Ca + H2O →_____________ +___________
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 condition and give balanced equation for the conversion of water gas to hydrogen – in the Bosch process.
