Name the gas evolved in each of the following cases:
(i) Copper carbonate is heated strongly.
(ii) Action of dilute hydrochloric acid on sodium sulphite.
(iii) Nitrogen combines with hydrogen.
(iv) Action of dilute sulphuric acid on sodium carbonate.
(v) Addition of sodium to cold water.
Answers
Answer:
1. CO2 gas is released
2. Sulphur dioxide is evolved
3. ammonia gas is released
4. CO2 emissions takes place
5. Hydrogen gas released
Explanation:
hope it helps....
Gas evolution reaction
Explanation:
A chemical process usually produces a gas as shown :
(i) Copper carbonate is heated strongly
CuCO₃ -------> CuO + CO₂
(Copper oxide) (Carbondioxide gas )
(ii)Let see Reaction of dilute hydrochloric acid on sodium sulphite.
when hydrochloric acid reacts with sodium sulphite,forms sodium chloride and sulphurdioxide.
2HCl +Na₂SO₃ -----> 2NaCl + SO₂ + H₂O
( gas )
(iii) Nitrogen combines with hydrogen.
N₂ + 3H₂ -----> 2NH₃
( gas )
(iv) Let us see the Reaction of dilute sulphuric acid on sodium carbonate.
H₂SO₄ + Na₂CO₃--->H₂O + CO₂+ Na₂SO₄
( gas )
(v) Addition of sodium to cold water.
Na + H₂O ----> NaOH + H₂
( gas )