Limestone or marble pieces or calcium carbonate powder or egg shells
Dilute hydrochloric acid
Phenolphthalein
Lime water
Sodium hydroxide solution
Blue litmus paper
Method
Collect the apparatus and chemicals required for the preparation of the gas.
Put some pieces of limestone or marble, or calcium carbonate powder, or egg shells into the Woulfe's bottle.
Fit the thistle funnel in one opening of the Woulfe's bottle and the delivery tube in the other, and make both airtight with rubber corks.
Pour dilute hydrochloric acid into the Woulfe's bottle through the thistle funnel until it covers the calcium carbonate. The opening of the thistle funnel should be inside the acid layer.
Allow the gas to pass through the delivery tube and collect in the gas jar kept straight upright.
Observe the reaction between calcium carbonate and the acid.
Carbon dioxide formed in the reaction passes from the Woulfe's bottle to the gas jar through the delivery tube. Being heavier than air, it is collected in the gas jar by upward displacement of air.
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