The gas obtained by Group II is hydrogen sulfide. It is a colorless gas with the smell of rotten eggs.
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The combustion test for hydrogen involves burning the gas, which can be potentially hazardous due to its flammability. Therefore, it is not advisable to perform this test in a classroom setting.
The gas obtained by Group I is hydrogen. It is colorless, odorless, and combustible.
The fixed proportion of elements in a compound ensures that it possesses specific chemical and physical properties unique to that compound. This fixed ratio is essential for maintaining the compound’s stability and defining its chemical identity.
When two or more elements are combined chemically, they form a compound. This compound has properties distinct from those of its constituent elements.