Is a white solid at room temperature a property of carbon dioxide?

No, a white solid at room temperature is not a property of carbon dioxide. Carbon dioxide (CO2) is a colorless gas at room temperature and pressure. However, when cooled or subjected to high pressure, carbon dioxide can exist as a solid, known as dry ice, which is typically white and sublimates at room temperature. Therefore, while it can form a white solid under specific conditions, it is not a property of carbon dioxide at room temperature.