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 when magma cools and solidifies within small pockets contained within the planetâs crust. As this rock is surrounded by pre-existing rock, the magma cools slowly, which results in it being coarse grained â i.e. mineral grains are big enough to be identifiable with the naked eye.