The dehydration of ethanol to give ethene 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.
Iran is a multi-ethnic and multicultural country. The northwestern region, Azerbaijan, is largely populated by Iranian Azeris, who are a Turkic people closely related to the people of Azerbaijan republic and Turkey.
Iran is much bigger, and was a religious regime. Iraq was a secular Ba'athist State. Iranians are mainly Shi'ite Muslims while many Iraqi Arabs are too there is also Arab and non-Arab Sunnis in Iraq.