Can limestone and quicklime be distinguished by heating and observing colours
To distinguish between these two substances is actually very simple, limestone is insoluble in water, with water reaction; lime and water can react and heat a large number of mature lime Ca (OH) 2, alkaline aqueous solution; so the water can be used to distinguish between the two substances. In addition, the reaction of hydrochloric acid and dilute hydrochloric acid is different. The reaction between limestone and dilute hydrochloric acid can produce carbon dioxide
So it is generally not possible to distinguish between limestone and quicklime by heating and observing colors
Limestone is the main component of calcium carbonate CaCO3, quicklime calcium oxide CaO, both are white solidUnder the condition of low temperature heating, both of them will not change, and the color of the two will not changeLimestone decomposition at high temperature to produce quicklime and carbon dioxide, the color will not have a significant change
