Answer :
Final Answer:
At a temperature of 150°C and a pressure of 190 atm, hydrogen gas (H₂) can be observed as a gas that is colorless and transparent.
Explanation:
The given chemical equation represents the dissociation of hydrogen bromide (HBr) into its constituent elements: 2HBr → H₂ + Br₂. This reaction indicates that hydrogen gas (H₂) and bromine gas (Br₂) are produced.
When hydrogen bromide dissociates at a temperature of 150°C and a pressure of 190 atm, the hydrogen gas formed possesses specific characteristics. Hydrogen gas, consisting of diatomic molecules (H₂), is known for its colorless and transparent nature. The molecules in hydrogen gas are composed of two hydrogen atoms bonded together.
Under the conditions of 150°C and 190 atm, hydrogen gas retains its gaseous state and does not undergo any phase changes, such as condensation or solidification. As a result, the appearance of hydrogen gas remains consistent, displaying its usual colorless and transparent properties.
In summary, given the context of the dissociation of hydrogen bromide at a temperature of 150°C and a pressure of 190 atm, hydrogen gas (H₂) will appear as a gas that is colorless and transparent, in line with its inherent characteristics.
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