CBSE Class 10 Answered
Describe an activity with diagram to illustrate that the reaction of metal carbonates and metal bicarbonates with acids produces carbon dioxide. Write the relevant equations of all the reactions that take place. Name any two forms in which calcium carbonate is found in nature.
- Take two test tubes, label them as A and B. Take about 0.5 g of sodium carbonate (Na2CO3) in test tube A and about 0.5 g of sodium hydrogen carbonate (NaHCO3) in test tube B.
- Add about 2 mL of dilute ethanoic to both the test tubes.
- Pass the gas produced in each case through lime water (calcium hydroxide solution) as shown in below figure and record your observations.
2NaHCO3 + H2SO4 → NaSO4 + 2H2O + 2CO2
Na2CO3+ H2SO4→ Na2SO4+ H2O + CO2
when ethanoic acid reacts with sodium carbonate, then carbon dioxide gas is evolved.
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