Question

x is a gas which is evolved during the thermal decomposition of zinc carbonate. gas x will not evolve during the​

Answer 1

Answer:

see below

Explanation:

during the decomposition of carbonates of alkali metals except of lithium (Li2CO3)

as x is CO2

Answer 2

Carbon dioxide is the gas which is evolved during the thermal decomposition of zinc carbonate.

Explanation:

• Generally, Metal carbonates decompose when undergoing heating.
• Many carbonates are more reactive than others.
• When zinc carbonate is heated or undergoes thermal decomposition the resultant products formed are carbon dioxide and zinc oxide.
• On thermal decomposition, zinc carbonate does not evolve oxygen but gives carbon dioxide.
• Zinc carbonate is heated strongly which turns yellow and it decomposes.
• Carbon dioxide gas is liberated, thus forming a precipitate in lime water.
• The yellow solid which is left behind in the test tube is hot zinc oxide.and the zinc oxide cools down, it turns white in color.