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How can one distinguish between the gases H2 and NO2?

Updated: 9/17/2019
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7y ago

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H2 is odorless, while H2S has a foul odor resembling rotten eggs.

H2 rises to the ceiling, while H2S sinks to the floor.

H2 is harmless, while H2S is poisonous.

H2 is not corrosive, while H2S is.

Colder than -70°C, H2 is still gas, while H2S is liquid.

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10y ago
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Q: How can one distinguish between the gases H2 and NO2?
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