Inhoudsopgave
Waar wordt calciumoxide voor gebruikt?
Toepassingen. Calciumoxide wordt gebruikt in de metaalindustrie om verontreinigingen in het erts te verwijderen. Het wordt gebruikt als droogmiddel en als tussenproduct bij de productie van calciumhydroxide (gebluste kalk).
Wat betekent CA Oh 2?
Ook: calciumhydroxide, witkalk, Ca(OH)2, putkalk. Gebluste kalk is ongebluste kalk waaraan water is toegevoegd. Gebluste kalk verhardt in vochtige toestand langzaam door de reactie met CO2 tot CaCO3 (kalksteen, calciumcarbonaat).
Kan krijt oplossen in water?
Krijt mengt zich met water. Maar het lost niet op. Kleine stukjes krijt blijven in het water zweven. Calcium reageert met water, waarbij er 2 nieuwe stoffen ontstaan namelijk kalk en waterstof gas.
What happens when calcium oxide is added to water?
Answer: When water is added to calcium oxide (quicklime), it will be converted to calcium hydroxide (slaked lime) with the liberation of enormous amount of heat. CaO + H2O = Ca (OH)2 + heat. What is the reaction between calcium oxide and water?
What is the chemical name of calcium oxide?
Calcium oxide, commonly known as lime, is a chemical compound with the formula CaO. Calcium oxide, also known as quicklime, is an alkaline substance that has been in use since the medieval age. It is believed that quicklime is one of the oldest chemicals known to the human race. It can also be referred to as burnt lime or lime.
How do you make quicklime from calcium oxide?
Calcium oxide is known as Quicklime. It’s produced by heating calcium carbonate (eg limestone) until the carbon dioxide is driven off leaving calcium oxide. It has a huge affinity for water, producing calcium hydroxide (“slaked lime”) with a highly exothermic reaction.
Is calcium oxide (CaO) active or passive?
Calcium oxide (CaO): ACTIVE. Like other high-melting solids ( tungsten, zirconia, carbon ) lime (CaO) becomes incandescent when heated to near its mp (2500 °C). Of both historical and etymological interest is the use of lime as an illuminant in stage lighting for some years before the advent of electricity (1850-1880).