Question

two gases that combine to form a solid

Answer 1

Two gases that combine to form a solid are Hydrogen chloride and ammonia to combine to form a ammonium.

Answer 2

The two gases that combine to form a solid are Hydrogen Chloride gas and Ammonia gas and the solid formed is Ammonium Chloride.

Explanation:

• Hydrogen Chloride is an acidic compound that will be very strong and its weight is 36.5 grams.

• When it is heated it gets vaporised and forms as Hydrogen Chloride gas.

• Ammonia is a basic compound which will be weak and its weight is 18 grams.

• When it is heated it gets vaporised and forms as Ammonia gas.

• When these two gases, Hydrochloric gas, and Ammonia gas as well, are reacted together, it will form a white colour solid on decomposition and the solid is Ammonium Chloride.

The reaction is:

$HCl + NH_3 \rightarrow NH_4Cl$  (on heating).

Learn more about Hydrogen Chloride gas

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