Question

Describe an activity with diagram to illustrate that the reaction of metal carbonates and metal bicarbonates
with acids products carbon dioxide. Write the relevant equation of all the reactions takes place. Name any
two forms in which calcium carbonate is found in nature.
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Answer 1

Answer:

Explanation:

AIM :

>> To show Acid reacts with metal carbonate to liberate carbon dioxide.

MATERIALS REQUIRED :

>> CaCO3 (marble chips), Woulfe-bottle, thistle funnel, dilute HCl, gas jar,

matchbox, delivery tube bent at two right angles, lime water.

PROCEDURE :

>> Take two test tube and level them as A and B

>> Take an amount of sodium carbonate (Na2CO3) in test tube A and than take the same amount of Sodium Hydrogen Carbonate (NaHCO3) in test tube B.

>> Add about 2 mL of dilute HCl to both the test tubes.

>> Pass the gas produced in each case through lime water (calcium hydroxide solution) as shown in diagram provided above.

>> Now, record your observations.

CaCo3 + 2HCl --------> CaCl2 + H2O + CO2

Ca(OH)2 + CO2 ------> CaCO3 + H20.

>> Metal carbonates react with dilute acids to liberate carbon dioxide.

◆>> Limestone, chalk, marble are different forms of calcium carbonate.

>> All metal carbonates and hydrogen

carbonates react with acids to form corresponding salts, water and carbon dioxide.

Answer 2

Explanation:

Aim: To show acid reacts with metal carbonate to liberate carbon dioxide, Material Required: CaCO3(marble chips), Woulfe-bottle, thistle funnel, dil. HCl, gas jar, matchbox, delivery tube bent at two right angles, lime water. Procedure: 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 HCl 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.

. The reactions occurring in the above Activity are written as Conclusion: Metal carbonates react with dilute acids to liberate carbon dioxide. Limestone, chalk, marble are different forms of calcium carbonate. All metal carbonates and hydrogen carbonates react with acids to form corresponding salts, water and carbon dioxide.