Question

Which gas is evolved when an acid reacts with metal carbonates? Which other category of compounds would produce the same gas on reacting with acids?

Answer 1

Answer:

hydrogen gas

Explanation:

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Answer 2

Answer:

• A substance which dissolves in aqueous medium to produce the hydronium ions are called as acids.
• A substance which dissolves in aqueous medium to produce the hydroxide ions are known as bases.
• A substance which dissolved in aqueous media to produce equal volume of hydroxide and hydronium ions are called salts.

For example: HCl reacts with sodium carbonate to form $\mathrm{CO}_{2}$ gas the reaction is follows below:

                                 $\mathrm{HCl}+\mathrm{Na}_{2} \mathrm{CO}_{3} \rightarrow \mathrm{NaCl}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CO}_{2}$

HCl reacts with calcium carbonate to form CO2 gas the reaction is follows below:

                                 $2 H C l+C a C O_{3} \rightarrow {CaCl}_{2}+H_{2} O+C O_{2}$