Question

1. A convenient source of acetylene, C2H2, is a compound incorrectly called "calcium carbide," which suggests a formula of Ca2C, composed of two Ca2+ ions and a C4- ion. Calcium carbide actually has the formula CaC2, and reacts with water to form calcium hydroxide and acetylene gas, which burns easily. Its actual formula suggests that it might contain two C- ions, rather than one C4 Using a Lewis structure for acetylene, the correct formula for calcium carbide, and molecular orbital theory, predict the correct structure of calcium carbide. Propose a way to prove your prediction.

Answer 1

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