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3. Which of the following is an alkaline gas?

A. [tex]NO_2[/tex]
B. [tex]NH_3[/tex]
C. NO
D. [tex]N_2O[/tex]
E. [tex]N_2O_4[/tex]

Sagot :

GinnyAnsweridn
To determine which of the given options is an alkaline gas, we should first understand the nature of each gas listed:

A. [tex]\( \text{NO}_2 \)[/tex] - Nitrogen dioxide: This is a reddish-brown gas with a sharp, biting odor. It is acidic in nature and is a strong oxidizing agent.

B. [tex]\( \text{NH}_3 \)[/tex] - Ammonia: This is a colorless gas with a pungent odor. It is known to be alkaline, meaning it has basic properties.

C. NO - Nitric oxide or nitrogen monoxide: This is a colorless gas that is relatively non-reactive and neutral in nature. It is neither acidic nor alkaline in typical conditions.

D. [tex]\( \text{N}_2\text{O} \)[/tex] - Nitrous oxide or laughing gas: This is a colorless gas with a slightly sweet odor. It has neutral properties and is not classified as either strongly acidic or alkaline.

E. [tex]\( \text{N}_2\text{O}_4 \)[/tex] - Dinitrogen tetroxide: This is a colorless or pale yellowish-brown gas that exists in equilibrium with nitrogen dioxide ([tex]\( \text{NO}_2 \)[/tex]). It tends to be acidic rather than alkaline.

Among these, the only gas that is known for its alkaline properties is ammonia ([tex]\( \text{NH}_3 \)[/tex]). Therefore, the correct answer is:

B [tex]\( \text{NH}_3 \)[/tex]
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