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Basic oxides are oxides that show basic properties, in opposition to acidic oxides. A basic oxide can either react with water to form a base, or with an acid to form a salt and water in a neutralization reaction. [according to whom?] Examples include: Sodium oxide, which reacts with water to produce sodium hydroxide
Quicklime (calcium oxide) is a base anhydride. It reacts with water to become hydrated lime (calcium hydroxide), [2] which is a strong base, chemically akin to lye. This reaction is exothermic. [2] CaO + H 2 O → Ca(OH) 2 (ΔH r = −63.7 kJ/mol of CaO) Sodium oxide reacts readily and irreversibly with water to give sodium hydroxide: [3] Na 2 ...
Basic substances can be used as insoluble heterogeneous catalysts for chemical reactions. Some examples are metal oxides such as magnesium oxide, calcium oxide, and barium oxide as well as potassium fluoride on alumina and some zeolites. Many transition metals make good catalysts, many of which form basic substances.
Metal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides. Many metals (such as zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. Aluminium oxide (Al 2 O 3) is an example of an amphoteric oxide. Amphoterism depends on the oxidation states of the oxide.
Water is the chemical substance with chemical formula H 2 O; one molecule of water has two hydrogen atoms covalently bonded to a single oxygen atom. [26] Water is a tasteless, odorless liquid at ambient temperature and pressure. Liquid water has weak absorption bands at wavelengths of around 750 nm which cause it to appear to have a blue color. [4]
Lead(II) oxide – PbO; Lead dioxide – PbO 2; Lithium oxide – Li 2 O; Magnesium oxide – MgO; Potassium oxide – K 2 O; Rubidium oxide – Rb 2 O; Sodium oxide – Na 2 O; Strontium oxide – SrO; Tellurium dioxide – TeO 2; Uranium(IV) oxide – UO 2 (only simple oxides, oxyhalides, and related compounds, not hydroxides, carbonates ...
Barium oxide; Basic oxide; Berkelium(II) oxide; Berkelium(III) oxide ... Praseodymium(V) oxide nitride; Properties of water; Protactinium monoxide; Protactinium(IV ...
Water splitting can be done at higher pH values as well however the standard potentials will vary according to the Nernst equation and therefore shift by -59 mV for each pH unit increase. However, the total cell potential (difference between oxidation and reduction half cell potentials) will remain 1.23 V.