Ethanol is heated with an excess of concentrated sulphuric acid at a temperature of 170Â°C. The gases produced are passed through sodium hydroxide solution to remove the carbon dioxide and sulphur dioxide produced from side reactions.
When magma cools either above or underground, igneous rock is formed. What is the difference between intrusive and extrusive igneous rocks? Since Intrusive igneous rocks were formed underground, they had more time to release air and the size of the crystals is bigger. Extrusive rocks cool quickly so they don't have much time to compress together with all the crystals.
Intrusive igneous rock is formed from solidified magma below the surface of the Earth. Intrusive rock exhibits a phaneritic texture, where the individual crystal grains are vi â¦ sible without magnification. Examples of intrusive igneous rocks are granite, diorite, and gabbro. Igneous rocks, which are formed from magma, are furtâ¦. 2  An Introduction to the Mineral Biotite Mica and its Role in Geology Biotite mica is a common rock-forming mineral. 3  It belongs to a large group of minerals that are found in igneous and metamorphic rocks.