DESCRIPTION

Carbon Dioxide occurs as a colorless gas. One L of Carbon Dioxide weighs about 1.98 g at 0° and a pressure of 760 mm Hg. Under a pressure of about 59 atmospheres, it may be condensed to a liquid, a portion of which forms a white solid (“Dry Ice”) upon rapid vaporization. Solid Carbon Dioxide evaporates without melting upon exposure to air. One volume of the gas dissolves in about 1 volume of water, forming a solution that is acid to litmus.