When acid reacts with carbonate a gas is released. How can you test that gas
Answers
Answer:
Acids on reaction with metals, bases and carbonates produce salts. The gas liberated during the reaction of a carbonate with an acid can be detected by passing the gas through lime water.
Explanation:
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Answer:
Acids on reaction with metals, bases and carbonates produce salts.
The gas liberated during the reaction of a carbonate with an acid can be detected by passing the gas through lime water.
Complete step by step answer:
When an acid reacts with a metal carbonate, a salt, water and carbon dioxide gas are produced. The general reaction can be written as follows.
acid + metalcarbonate→salt + water + carbondioxide
For example, sulphuric acid reacts with iron (II) carbonate to yield iron (II) sulphate, water and carbon dioxide gas.
H2SO4 + FeCO3→FeSO4+H2O+CO2
Similarly, calcium carbonate is a metal carbonate and so it will react with a dilute acid like hydrochloric acid to yield a salt calcium chloride, water and carbon dioxide gas.
CaCO3 + 2HCl→CaCl2+CO2+H2O
The carbon dioxide gas causes bubbling during the reaction. It can be detected by passing it through lime water or calcium hydroxide, which will turn milky because of the formation of calcium carbonate which is insoluble in water.