What is the laboratory preparation of carbon iv oxide
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Answer
The laboratory preparation of carbon(IV) oxide (CO₂) typically involves the reaction between an acid and a metal carbonate or metal bicarbonate.
Step-by-step solution
4 stepsChoose reactants.
Commonly, dilute hydrochloric acid (HCl) or dilute sulfuric acid (H₂SO₄) is reacted with calcium carbonate (CaCO₃) or sodium bicarbonate (NaHCO₃).
Write the balanced chemical equation.
Using calcium carbonate and hydrochloric acid as an example:
CaCO₃(s) + 2HCl(aq) → CaCl₂(aq) + H₂O(l) + CO₂(g)Describe the setup.
The solid carbonate is placed in a flask, and the acid is added. The flask is fitted with a delivery tube to direct the gas produced into a collection vessel.
Collect the gas.
Carbon(IV) oxide is denser than air and soluble in water, so it is usually collected by upward delivery (over the mouth of an inverted container) or by displacement of water in a gas jar, though some CO₂ will dissolve.
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