) Mannat & Simran did an experiment in science lab ,that is acid react with metal carbonates .Gas is prduced. Name the gas ?ਮੰਨਤ ਅਤੇ ਸਿਮਰਨ ਨੇ ਵਿਗਿਆਨ ਪ੍ਰਯੋਗਸ਼ਾਲਾ ਵਿਚ ਇਕ ਪ੍ਰਯੋਗ ਕੀਤਾ, ਜਿਸ ਵਿਚ ਧਾਤੂ ਕਾਰਬੋਨੇਟ ਨਾਲ ਐਸਿਡ ਪ੍ਰਤੀਕ੍ਰਿਆ ਹੁੰਦੀ ਹੈ. ਇੱਕ ਗੈਸ ਪੈਦਾ ਹੁੰਦੀ ਹੈ, ਗੈਸ ਦਾ ਨਾਮ ਦੱਸੋ? *
2 points

(a)CO2
b) O2
(c)N2
(d)H2
Answers
Answer:
Calcium carbonate gives carbon dioxide gas when reacts with hydrochloric acid.
CaCO
3
+2HCl⟶CaCl
2
+CO
2
+H
2
O
Carbon dioxide turns lime water milky when passed through it because of formation of calcium carbonate.
When carbon dioxide; so formed; is passed through lime water, lime water turns milky because of the formation of calcium carbonate.
Ca(OH)
2
+CO
2
→CaCO
3
+H
2
O
On the electrolysis of brine, chlorine gas is deposited over anode which gives calcium oxychloride (Bleaching powder) on passing over slaked lime. The bleaching powder is used in disinfecting the drinking water.
Ca(OH)
2
+Cl
2
⟶CaOCl
2
+H
2
O
Bleaching powder is used for disinfecting drinking water.
Therefore, metal carbonate
′
X
′
is calcium carbonate.
Solution Y is lime water (Calcium hydroxide).
Gas G is chlorine gas.
Dry Y is dry calcium hydroxide (dry slaked lime).
Compound Z is bleaching powder (Calcium oxychloride).